{"id":5587,"date":"2021-09-08T15:20:16","date_gmt":"2021-09-08T08:20:16","guid":{"rendered":"https:\/\/www.pnj.com.vn\/blog\/?p=5587"},"modified":"2022-06-23T10:39:05","modified_gmt":"2022-06-23T03:39:05","slug":"mau-sac-da-quy-da-ban-quy","status":"publish","type":"post","link":"https:\/\/www.pnj.com.vn\/blog\/mau-sac-da-quy-da-ban-quy\/","title":{"rendered":"M\u00e0u s\u1eafc \u0111\u00e1 qu\u00fd, \u0111\u00e1 b\u00e1n qu\u00fd"},"content":{"rendered":"\n<p><em>M\u1ed7i m\u1ed9t lo\u1ea1i \u0111\u00e1 qu\u00fd th\u01b0\u1eddng c\u00f3 m\u1ed9t m\u00e0u \u0111\u1eb7c tr\u01b0ng, \u0111\u00e2y c\u0169ng l\u00e0 m\u00e0u \u0111\u1eb9p nh\u1ea5t v\u00e0 gi\u00e1 tr\u1ecb nh\u1ea5t c\u1ee7a lo\u1ea1i \u0111\u00e1 \u0111\u00f3. Nh\u01b0 ruby th\u00ec m\u00e0u \u0111\u1eb7c tr\u01b0ng l\u00e0 m\u00e0u \u0111\u1ecf \u0111\u1eadm v\u00e0 \u0111\u1ecf ph\u1edbt t\u00eda (m\u00e0u \u0111\u1eb9p nh\u1ea5t th\u01b0\u1eddng \u0111\u1ecf nh\u01b0 huy\u1ebft b\u1ed3 c\u00e2u).<\/em><\/p>\n\n\n\n<p><em>Ch\u00fang ta h\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u c\u00e1c nh\u00e2n t\u1ed1 \u1ea3nh h\u01b0\u1edfng l\u00ean m\u00e0u c\u1ee7a \u0111\u00e1 qu\u00fd nh\u00e9!<\/em><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 ez-toc-wrap-left counter-flat ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a4a674f2c290\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a4a674f2c290\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.pnj.com.vn\/blog\/mau-sac-da-quy-da-ban-quy\/#Cat_mai_Cut\" >C\u1eaft m\u00e0i (Cut)<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.pnj.com.vn\/blog\/mau-sac-da-quy-da-ban-quy\/#Doi_mau_Color_Zoning\" >\u0110\u1eddi m\u00e0u (Color Zoning)<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.pnj.com.vn\/blog\/mau-sac-da-quy-da-ban-quy\/#Da_sac_Pleochroism\" >\u0110a s\u1eafc (Pleochroism)<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.pnj.com.vn\/blog\/mau-sac-da-quy-da-ban-quy\/#Do_tinh_khiet_Clarity\" >\u0110\u1ed9 tinh khi\u1ebft (Clarity)<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.pnj.com.vn\/blog\/mau-sac-da-quy-da-ban-quy\/#Phat_huynh_quang_Fluorescence\" >Ph\u00e1t hu\u1ef3nh quang (Fluorescence)<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.pnj.com.vn\/blog\/mau-sac-da-quy-da-ban-quy\/#Hieu_ung_doi_mau_Color_change\" >Hi\u1ec7u \u1ee9ng \u0111\u1ed5i m\u00e0u (Color change)<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cat_mai_Cut\"><\/span><strong>C\u1eaft m\u00e0i (Cut)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c m\u1ed9t vi\u00ean \u0111\u00e1 \u0111\u1eb9p sau khi ch\u1ebf t\u00e1c th\u1ee3 c\u1eaft m\u00e0i ph\u1ea3i ki\u1ec3m tra tinh th\u1ec3 th\u00f4 r\u1ea5t c\u1ea9n th\u1eadn tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean c\u1ee7a qu\u00e1 tr\u00ecnh c\u1eaft m\u00e0i. M\u1ed7i m\u1eabu \u0111\u00e1 th\u00f4 c\u00f3 m\u1ed9t d\u1ea1ng ph\u00e2n b\u1ed1 m\u00e0u (h\u00e0m l\u01b0\u1ee3ng v\u00e0 v\u1ecb tr\u00ed c\u1ee7a m\u00e0u trong tinh th\u1ec3) \u0111\u1eb7c tr\u01b0ng c\u1ee7a n\u00f3. V\u00ed d\u1ee5: m\u00e0u xanh d\u01b0\u01a1ng trong Sapphire th\u00f4 c\u00f3 th\u1ec3 ch\u1ec9 n\u1eb1m t\u1ea1i hai ch\u00f3p tinh th\u1ec3.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"612\" height=\"400\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-01.jpg\" alt=\"\" class=\"wp-image-5588\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-01.jpg 612w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-01-300x196.jpg 300w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-01-150x98.jpg 150w\" sizes=\"(max-width: 612px) 100vw, 612px\" title=\"\"><figcaption><em>Trong nhi\u1ec1u tinh th\u1ec3 Sapphire xanh d\u01b0\u01a1ng m\u00e0u ch\u1ec9 t\u1eadp trung \u1edf g\u1ea7n b\u1ec1 m\u1eb7t v\u00e0 b\u00ean trong g\u1ea7n nh\u01b0 kh\u00f4ng m\u00e0u, v\u00ec v\u1eady th\u1ee3 c\u1eaft m\u00e0i ph\u1ea3i \u0111\u1ecbnh h\u01b0\u1edbng sao cho vi\u00ean \u0111\u00e1 sau khi m\u00e0i ph\u1ea3i c\u00f3 ch\u1ee9a m\u1ed9t s\u1ed1 v\u00f9ng c\u00f3 m\u00e0u t\u1eeb tinh th\u1ec3 \u2013 \u1ea2nh: Peter Johnston\/GIA<\/em><\/figcaption><\/figure><\/div>\n\n\n<p>M\u1ed9t m\u1eabu \u0111\u00e1 th\u00f4 c\u00f3 m\u00e0u \u0111\u1ec1u \u0111\u1eb7n c\u00f3 th\u1ec3 m\u00e0i th\u00e0nh nh\u1eefng vi\u00ean \u0111\u00e1 c\u00f3 m\u00e0u kh\u00e1c nhau ph\u1ee5 thu\u1ed9c v\u00e0o k\u00edch th\u01b0\u1edbc v\u00e0 t\u1ec9 l\u1ec7 c\u1eaft m\u00e0i c\u1ee7a vi\u00ean \u0111\u00e1 sau khi m\u00e0i. V\u00ed d\u1ee5: m\u1ed9t vi\u00ean Topaz th\u00f4 c\u00f3 m\u00e0u h\u1ed3ng nh\u1ea1t ch\u1ec9 c\u00f3 th\u1ec3 m\u00e0i th\u00e0nh m\u1ed9t vi\u00ean \u0111\u00e1 c\u00f3 m\u00e0u \u0111\u1eb9p khi n\u00f3 c\u00f3 k\u00edch th\u01b0\u1edbc \u0111\u1ee7 l\u1edbn. V\u00ec v\u1eady khi g\u1eb7p nh\u1eefng lo\u1ea1i n\u00e0y th\u1ee3 c\u1eaft m\u00e0i ph\u1ea3i c\u1eaft th\u00e0nh m\u1ed9t vi\u00ean \u0111\u00e1 l\u1edbn, m\u00e0u \u0111\u1eadm thay v\u00ec c\u1eaft th\u00e0nh m\u1ed9t s\u1ed1 vi\u00ean nh\u1ecf c\u00f3 t\u1ec9 l\u1ec7 c\u1eaft m\u00e0i chu\u1ea9n nh\u01b0ng c\u00f3 m\u00e0u nh\u1ea1t h\u01a1n. \u0110\u1ed1i v\u1edbi nh\u1eefng vi\u00ean \u0111\u00e1 th\u00f4 c\u00f3 m\u00e0u ph\u00e2n b\u1ed1 th\u00e0nh t\u1eebng l\u1edbp song song v\u1edbi nh\u1eefng m\u1eb7t tinh th\u1ec3 ho\u1eb7c n\u1eb1m g\u1ea7n b\u1ec1 m\u1eb7t c\u1ee7a tinh th\u1ec3. \u0110\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c nh\u1eefng vi\u00ean \u0111\u00e1 c\u00f3 m\u00e0u \u0111\u1eb9p nh\u1ea5t (m\u00e0 vi\u00ean \u0111\u00e1 \u0111\u00f3 c\u00f3 th\u1ec3) sau khi m\u00e0i khi nh\u00ecn vi\u00ean \u0111\u00e1 t\u1eeb tr\u00ean m\u1eb7t th\u00ec th\u1ee3 c\u1eaft m\u00e0i ph\u1ea3i \u0111\u1ecbnh h\u01b0\u1edbng sao cho nh\u1eefng l\u1edbp m\u00e0u ph\u1ea3i song song v\u1edbi g\u1edd ho\u1eb7c \u0111\u1eb7t ph\u1ea7n m\u00e0u \u0111\u1eadm \u1edf ch\u00f3p \u0111\u00e1y (culet) c\u1ee7a vi\u00ean \u0111\u00e1 \u0111\u01b0\u1ee3c m\u00e0i gi\u00e1c.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-02.jpg\" alt=\"\" class=\"wp-image-5589\" width=\"309\" height=\"209\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-02.jpg 309w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-02-300x203.jpg 300w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-02-150x101.jpg 150w\" sizes=\"(max-width: 309px) 100vw, 309px\" title=\"\"><figcaption>Khi nh\u00ecn t\u1eeb tr\u00ean m\u1eb7t vi\u00ean Sapphire n\u00e0y g\u1ea7n nh\u01b0 c\u00f3 m\u00e0u \u0111\u1ec1u \u0111\u1eb7n, tuy nhi\u00ean khi nh\u00ecn t\u1eeb b\u00ean c\u1ea1nh th\u00ec m\u00e0u xanh d\u01b0\u01a1ng ch\u1ec9 l\u00e0 m\u1ed9t l\u1edbp m\u1ecfng n\u1eb1m d\u01b0\u1edbi m\u1eb7t b\u00e0n \u2013 \u1ea2nh: Shane McClure\/GIA<\/figcaption><\/figure><\/div>\n\n\n<p>T\u1ec9 l\u1ec7 c\u1eaft m\u00e0i ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 l\u00e0m cho vi\u00ean \u0111\u00e1 th\u1ec3 hi\u1ec7n t\u1ed1i \u0111a \u0111\u1ed9 chi\u1ebfu s\u00e1ng v\u00e0 m\u00e0u c\u1ee7a n\u00f3, nh\u01b0ng ch\u00fang ta ph\u1ea3i xem x\u00e9t \u0111\u1ebfn l\u1ee3i \u00edch kinh t\u1ebf \u0111\u1ec3 c\u1eaft m\u00e0i m\u1ed7i vi\u00ean \u0111\u00e1 th\u00f4 v\u00ec khi c\u1eaft m\u00e0i \u0111\u00fang chu\u1ea9n c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng vi\u00ean \u0111\u00e1 r\u1ea5t nhi\u1ec1u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Doi_mau_Color_Zoning\"><\/span><strong>\u0110\u1eddi m\u00e0u (Color Zoning)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Th\u00f4ng th\u01b0\u1eddng, m\u00e0u c\u1ee7a m\u1ed9t vi\u00ean \u0111\u00e1 th\u00f4 kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed1 m\u1ed9t c\u00e1ch \u0111\u1ec1u \u0111\u1eb7n v\u00e0 th\u1ee3 c\u1eaft m\u00e0i ph\u1ea3i ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng \u0111\u1ec3 t\u1ea1o ra m\u00e0u \u0111\u1eb9p nh\u1ea5t cho vi\u00ean \u0111\u00e1 sau khi m\u00e0i. Sapphire xanh d\u01b0\u01a1ng v\u00e0 Amethyst th\u01b0\u1eddng c\u00f3 nh\u1eefng v\u00f9ng m\u00e0u \u0111\u1eadm, song song v\u1edbi m\u1eb7t tinh th\u1ec3 c\u1ee7a ch\u00fang. \u0110\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u1edbi m\u00e0u, n\u00f3 \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec1u ki\u1ec7n t\u0103ng tr\u01b0\u1edfng v\u00e0 ch\u1ea5t t\u1ea1o m\u00e0u trong qu\u00e1 tr\u00ecnh tinh th\u1ec3 k\u1ebft tinh.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"500\" height=\"399\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-04.jpg\" alt=\"\" class=\"wp-image-5591\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-04.jpg 500w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-04-300x239.jpg 300w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-04-150x120.jpg 150w\" sizes=\"(max-width: 500px) 100vw, 500px\" title=\"\"><figcaption>\u0110\u1edbi m\u00e0u m\u00e0u g\u00f3c c\u1ea1nh \u0111i theo nh\u1eefng m\u1eb7t tinh th\u1ec3 trong amethyst thi\u00ean nhi\u00ean &#8211; \u1ea2nh: D. Beaton\/GIA<\/figcaption><\/figure><\/div>\n\n\n<p>\u0110\u1edbi m\u00e0u l\u00e0 nh\u1eefng khu v\u1ef1c c\u00f3 m\u00e0u kh\u00f4ng \u0111\u1ec1u \u0111\u1eb7n ho\u1eb7c nh\u1eefng m\u00e0u kh\u00e1c nhau khi nh\u00ecn vi\u00ean \u0111\u00e1 c\u00f9ng m\u1ed9t h\u01b0\u1edbng. Sapphire c\u00f3 t\u00f4ng m\u00e0u t\u1ed1i t\u1eeb m\u1ed9t s\u1ed1 ngu\u1ed3n g\u1ed1c th\u01b0\u1eddng ch\u1ee9a nh\u1eefng \u0111\u1edbi m\u00e0u g\u00f3c c\u1ea1nh, \u0111\u00e2y l\u00e0 nh\u1eefng d\u1ea3i g\u1ed3m nh\u1eefng m\u00e0u kh\u00e1c nhau ho\u00e0n to\u00e0n ho\u1eb7c c\u00f9ng m\u1ed9t m\u00e0u nh\u01b0ng c\u01b0\u1eddng \u0111\u1ed9 kh\u00e1c nhau. Th\u01b0\u1eddng s\u1ebd th\u1ea5y nh\u1eefng d\u1ea3i m\u00e0u \u0111\u1eadm n\u1eb1m xen k\u1ebd v\u1edbi nh\u1eefng d\u1ea3i g\u1ea7n kh\u00f4ng m\u00e0u. Do t\u00f4ng c\u1ee7a nh\u1eefng lo\u1ea1i Sapphire n\u00e0y th\u01b0\u1eddng qu\u00e1 \u0111\u1eadm n\u00ean kh\u00f4ng th\u1ec3 th\u1ea5y \u0111\u1edbi m\u00e0u.<\/p>\n\n\n\n<p>N\u1ebfu c\u1eaft m\u00e0i c\u1ea9n th\u1eadn c\u00f3 th\u1ec3 gi\u1ea3m nh\u1eefng \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1edbi m\u00e0u. Trong Amethyst, \u0111\u1edbi m\u00e0u \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u01b0\u1edbng sao cho nh\u1eefng d\u1ea3i m\u00e0u n\u1eb1m song song v\u1edbi g\u1edd. \u0110\u1edbi m\u00e0u trong Amethyst th\u01b0\u1eddng c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c mi\u1ec5n l\u00e0 n\u00f3 kh\u00f4ng \u0111\u01b0\u1ee3c nh\u00ecn th\u1ea5y t\u1eeb b\u1ec1 m\u1eb7t vi\u00ean \u0111\u00e1. Trong nh\u1eefng tinh th\u1ec3 c\u00f3 \u0111\u1edbi m\u00e0u, th\u1ee3 c\u1eaft m\u00e0i c\u00f3 th\u1ec3 t\u1eadp trung m\u00e0u trong m\u1ed9t khu v\u1ef1c nh\u1ecf, th\u01b0\u1eddng n\u1eb1m g\u1ea7n v\u1edbi culet, \u0111i\u1ec1u n\u00e0y s\u1ebd l\u00e0m n\u1ed5i b\u1eadt m\u00e0u c\u1ee7a vi\u00ean \u0111\u00e1 khi nh\u00ecn t\u1eeb tr\u00ean m\u1eb7t, th\u1eadm ch\u00ed n\u1ebfu ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a vi\u00ean \u0111\u00e1 c\u00f3 m\u00e0u r\u1ea5t nh\u1ea1t ho\u1eb7c kh\u00f4ng m\u00e0u. N\u1ebfu \u0111\u1edbi m\u00e0u nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c tr\u00ean b\u1ec1 m\u1eb7t vi\u00ean \u0111\u00e1 m\u00e0 th\u1ee3 c\u1eaft m\u00e0i kh\u00f4ng th\u1ec3 che gi\u1ea5u \u0111\u01b0\u1ee3c, g\u1ecdi l\u00e0 unintended color zoning v\u00e0 \u0111\u01b0\u1ee3c xem nh\u01b0 m\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111\u1ed9 tinh khi\u1ebft.<\/p>\n\n\n\n<p>\u0110\u00f4i khi h\u00e0m l\u01b0\u1ee3ng c\u1ee7a nh\u1eefng nguy\u00ean t\u1ed1 v\u1ebft thay \u0111\u1ed5i m\u1ed9t c\u00e1ch \u0111\u1ed9t ng\u1ed9t khi vi\u00ean \u0111\u00e1 t\u0103ng tr\u01b0\u1edfng. Trong m\u1ed9t s\u1ed1 lo\u1ea1i \u0111\u00e1 qu\u00fd, s\u1ef1 thay \u0111\u1ed5i c\u1ee7a nh\u1eefng nguy\u00ean t\u1ed1 v\u1ebft n\u00e0y l\u00e0 nguy\u00ean nh\u00e2n c\u1ee7a s\u1ef1 thay \u0111\u1ed5i m\u00e0u trong qu\u00e1 tr\u00ecnh t\u0103ng tr\u01b0\u1edfng. \u0110i\u1ec1u n\u00e0y l\u00e0m cho vi\u00ean \u0111\u00e1 c\u00f3 hai ho\u1eb7c nhi\u1ec1u \u0111\u1edbi m\u00e0u r\u00f5 r\u1ec7t. N\u1ebfu m\u00e0u kh\u00e1c nhau ho\u00e0n to\u00e0n, th\u1ee3 c\u1eaft m\u00e0i ph\u1ea3i c\u1eaft sao cho \u0111\u1eb7c \u0111i\u1ec3m n\u00e0y c\u1ee7a vi\u00ean \u0111\u00e1 n\u1ed5i b\u1eadt nh\u1ea5t. Ametrine v\u00e0 Tourmaline hai m\u00e0u th\u00ec \u0111\u01b0\u1ee3c c\u1eaft (c\u00f3 ch\u1ee7 t\u00e2m) \u0111\u1ec3 th\u1ec3 hi\u1ec7n nh\u1eefng \u0111\u1edbi m\u00e0u n\u00e0y.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-05.jpg\" alt=\"\" class=\"wp-image-5592\" width=\"356\" height=\"289\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-05.jpg 356w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-05-300x244.jpg 300w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-05-150x122.jpg 150w\" sizes=\"(max-width: 356px) 100vw, 356px\" title=\"\"><\/figure><\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-06.jpg\" alt=\"\" class=\"wp-image-5593\" width=\"353\" height=\"287\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-06.jpg 353w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-06-300x244.jpg 300w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-06-150x122.jpg 150w\" sizes=\"(max-width: 353px) 100vw, 353px\" title=\"\"><figcaption>&nbsp;Hai vi\u00ean \u0111\u00e1 n\u00e0y \u0111\u01b0\u1ee3c c\u1eaft m\u00e0i v\u1edbi \u0111\u1edbi m\u00e0u \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n r\u00f5 r\u00e0ng. Corundum t\u1eeb Vi\u1ec7t Nam v\u1edbi m\u00e0u xanh d\u01b0\u01a1ng v\u00e0 m\u00e0u h\u1ed3ng tr\u00ean c\u00f9ng m\u1ed9t tinh th\u1ec3 (tr\u00e1i) &#8211; \u1ea2nh: Maha Tannous\/GIA. Ametrine l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a amethyst v\u00e0 citrine (ph\u1ea3i) &#8211; \u1ea2nh: Robert Weldon\/GIA<\/figcaption><\/figure><\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Da_sac_Pleochroism\"><\/span><strong>\u0110a s\u1eafc (Pleochroism)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Trong h\u1ea7u h\u1ebft c\u00e1c h\u01b0\u1edbng b\u00ean trong vi\u00ean \u0111\u00e1 d\u1ecb h\u01b0\u1edbng, trong su\u1ed1t v\u00e0 c\u00f3 m\u00e0u \u00e1nh s\u00e1ng \u0111i v\u00e0o s\u1ebd t\u00e1ch th\u00e0nh hai tia, m\u00e0 c\u00f3 th\u1ec3 l\u00e0m cho vi\u00ean \u0111\u00e1 c\u00f3 nh\u1eefng th\u00e2n m\u00e0u kh\u00e1c nhau, ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 \u0111\u1ecbnh h\u01b0\u1edbng c\u1eaft m\u00e0i v\u00e0 g\u00f3c nh\u00ecn. \u0110\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111a s\u1eafc.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-07.jpg\" alt=\"\" class=\"wp-image-5594\" width=\"587\" height=\"391\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-07.jpg 587w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-07-300x200.jpg 300w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-07-150x100.jpg 150w\" sizes=\"(max-width: 587px) 100vw, 587px\" title=\"\"><figcaption>&nbsp;\u0110a s\u1eafc m\u00e0u xanh d\u01b0\u01a1ng v\u00e0 m\u00e0u t\u00eda c\u1ee7a tanzanite \u0111\u00e3 x\u1eed l\u00fd nhi\u1ec7t \u0111\u01b0\u1ee3c quan s\u00e1t d\u01b0\u1edbi k\u00ednh \u0111a s\u1eafc &#8211; \u1ea2nh: Dr. Eduard J. Gubelin\/GIA<\/figcaption><\/figure><\/div>\n\n\n<p>Nh\u1eefng lo\u1ea1i \u0111\u00e1 nh\u01b0 Andalusite, Iolite v\u00e0 Tanzanite, \u0111a s\u1eafc c\u00f3 th\u1ec3 th\u1ea5y b\u1eb1ng m\u1eaft th\u01b0\u1eddng. V\u00ed d\u1ee5: Andalusite \u0111\u01b0\u1ee3c c\u1eaft m\u00e0i sao cho khi nh\u00ecn vi\u00ean \u0111\u00e1 t\u1eeb tr\u00ean m\u1eb7t c\u00f3 th\u1ec3 th\u1ea5y \u0111\u01b0\u1ee3c h\u1ed7n h\u1ee3p m\u00e0u \u0111a s\u1eafc v\u00e0ng-l\u1ee5c v\u00e0 cam \u0111\u1eb7c tr\u01b0ng. V\u00e0 Tanzanite c\u00f3 th\u1ec3 c\u00f3 m\u00e0u ph\u1edbt xanh d\u01b0\u01a1ng nhi\u1ec1u h\u01a1n ho\u1eb7c ph\u1edbt t\u00edm nhi\u1ec1u h\u01a1n tr\u00ean b\u1ec1 m\u1eb7t ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 \u0111\u1ecbnh h\u01b0\u1edbng c\u1ee7a vi\u1ec7c c\u1eaft m\u00e0i.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"363\" height=\"395\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-08.jpg\" alt=\"\" class=\"wp-image-5595\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-08.jpg 363w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-08-276x300.jpg 276w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-08-150x163.jpg 150w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-08-300x326.jpg 300w\" sizes=\"(max-width: 363px) 100vw, 363px\" title=\"\"><\/figure><\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"348\" height=\"434\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-09.jpg\" alt=\"\" class=\"wp-image-5596\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-09.jpg 348w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-09-241x300.jpg 241w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-09-150x187.jpg 150w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-09-300x374.jpg 300w\" sizes=\"(max-width: 348px) 100vw, 348px\" title=\"\"><figcaption>M\u1ed9t s\u1ed1 lo\u1ea1i \u0111\u00e1 qu\u00fd c\u00f3 \u0111a s\u1eafc r\u1ea5t m\u1ea1nh m\u00e0 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y b\u1eb1ng m\u1eaft th\u01b0\u1eddng. Tanzanite th\u1ec3 hi\u1ec7n \u0111a s\u1eafc m\u00e0u xanh d\u01b0\u01a1ng v\u00e0 m\u00e0u t\u00edm (tr\u00e1i). Andalusite th\u1ec3 hi\u1ec7n \u0111a s\u1eafc m\u00e0u \u0111\u1ecf v\u00e0 l\u1ee5c (ph\u1ea3i) &#8211; \u1ea2nh: Robert Weldon\/GIA<\/figcaption><\/figure><\/div>\n\n\n<p>\u0110\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 lo\u1ea1i \u0111\u00e1 nh\u01b0 Ruby, Tourmaline v\u00e0 Sapphire, m\u1ed9t s\u1ed1 m\u00e0u \u0111a s\u1eafc c\u00f3 th\u1ec3 l\u00e0m cho th\u00e2n m\u00e0u vi\u00ean \u0111\u00e1 kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1eb9p, v\u00ec v\u1eady vi\u00ean \u0111\u00e1 th\u00f4 ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh h\u01b0\u1edbng c\u1ea9n th\u1eadn tr\u01b0\u1edbc khi c\u1eaft m\u00e0i \u0111\u1ec3 th\u1ec3 hi\u1ec7n m\u00e0u \u0111\u1eb9p nh\u1ea5t tr\u00ean b\u1ec1 m\u1eb7t vi\u00ean \u0111\u00e1 sau khi c\u1eaft m\u00e0i. Th\u1eadt may m\u1eafn trong Ruby v\u00e0 Sapphire s\u1ef1 \u0111\u1ecbnh h\u01b0\u1edbng \u0111\u1ec3 c\u00f3 m\u00e0u \u0111\u1eb9p nh\u1ea5t c\u0169ng l\u00e0 h\u01b0\u1edbng l\u00e0m cho vi\u00ean \u0111\u00e1 c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng l\u1edbn nh\u1ea5t sau khi m\u00e0i. V\u00ed d\u1ee5: Sapphire xanh d\u01b0\u01a1ng s\u1ebd c\u00f3 m\u00e0u \u0111a s\u1eafc \u0111\u1eb9p nh\u1ea5t n\u1ebfu m\u1eb7t b\u00e0n \u0111\u01b0\u1ee3c c\u1eaft vu\u00f4ng g\u00f3c v\u1edbi chi\u1ec1u d\u00e0i tinh th\u1ec3 (tr\u1ee5c c), n\u1ebfu c\u1eaft m\u1eb7t b\u00e0n song song v\u1edbi chi\u1ec1u d\u00e0i tinh th\u1ec3 th\u00ec s\u1ebd c\u00f3 m\u00e0u xanh d\u01b0\u01a1ng ph\u1edbt l\u1ee5c tr\u00ean b\u1ec1 m\u1eb7t vi\u00ean \u0111\u00e1, l\u00e0m cho vi\u00ean \u0111\u00e1 c\u00f3 m\u00e0u kh\u00f4ng \u0111\u1eb9p v\u00e0 gi\u1ea3m gi\u00e1 tr\u1ecb.<\/p>\n\n\n\n<p>M\u1ed9t s\u1ed1 lo\u1ea1i \u0111\u00e1 \u0111\u1eb3ng h\u01b0\u1edbng nh\u01b0 Spinel c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t m\u00e0u th\u1ee9 c\u1ea5p (second) tr\u00ean b\u1ec1 m\u1eb7t. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 \u0111a s\u1eafc. N\u00f3 xu\u1ea5t hi\u1ec7n khi \u00e1nh s\u00e1ng ph\u1ea3n chi\u1ebfu b\u00ean trong vi\u00ean \u0111\u00e1 ph\u1ea3n \u1ee9ng v\u1edbi \u00e1nh s\u00e1ng truy\u1ec1n qua n\u00f3. N\u1ebfu ki\u1ec3m tra v\u1edbi k\u00ednh \u0111a s\u1eafc th\u00ec ch\u1ec9 th\u1ea5y c\u00f3 m\u1ed9t m\u00e0u.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Do_tinh_khiet_Clarity\"><\/span><strong>\u0110\u1ed9 tinh khi\u1ebft (Clarity)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Nh\u1eefng bao th\u1ec3 m\u00e0 l\u00e0m gi\u00e1n \u0111o\u1ea1n \u0111\u01b0\u1eddng \u0111i c\u1ee7a \u00e1nh s\u00e1ng xuy\u00ean qua vi\u00ean \u0111\u00e1 m\u00e0i gi\u00e1c s\u1ebd l\u00e0m gi\u1ea3m \u0111\u1ed9 chi\u1ebfu s\u00e1ng v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 m\u00e0u. Nh\u01b0ng m\u1ed9t s\u1ed1 bao th\u1ec3 c\u0169ng c\u00f3 th\u1ec3 \u0111em l\u1ea1i nh\u1eefng \u1ea3nh h\u01b0\u1edfng t\u00edch c\u1ef1c l\u00ean b\u1ec1 ngo\u00e0i vi\u00ean \u0111\u00e1. V\u00ed d\u1ee5: nh\u1eefng bao th\u1ec3 m\u1ecbn c\u00f3 th\u1ec3 ph\u00e2n t\u00e1n \u00e1nh s\u00e1ng b\u00ean trong vi\u00ean \u0111\u00e1 m\u00e0i gi\u00e1c v\u00e0 l\u00e0m cho nh\u1eefng v\u00f9ng t\u1ed1i c\u1ee7a vi\u00ean \u0111\u00e1 (extinction) \u00edt b\u1ecb ch\u00fa \u00fd h\u01a1n.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-10.jpg\" alt=\"\" class=\"wp-image-5597\" width=\"657\" height=\"357\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-10.jpg 657w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-10-300x163.jpg 300w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-10-150x82.jpg 150w\" sizes=\"(max-width: 657px) 100vw, 657px\" title=\"\"><figcaption>Nh\u1eefng s\u1ee3i rutile d\u00e0i, m\u1ea3nh c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7u \u1ee9ng \u201csleepy\u201d trong sapphire xanh d\u01b0\u01a1ng &#8211; \u1ea2nh: John Koivula\/GIA<\/figcaption><\/figure><\/div>\n\n\n<p>Bao th\u1ec3 c\u0169ng c\u00f3 th\u1ec3 t\u1ea1o ra m\u00e0u c\u1ee7a vi\u00ean \u0111\u00e1. Nh\u1eefng h\u1ea1t mica m\u00e0u l\u1ee5c l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ra th\u00e2n m\u00e0u l\u1ee5c, v\u00e0 nh\u1eefng bao th\u1ec3 hematite m\u00e0u n\u00e2u nh\u1ea1t l\u00e0m cho m\u1ed9t s\u1ed1 Sapphire v\u00e0ng c\u00f3 m\u00e0u \u0111\u1eadm h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Phat_huynh_quang_Fluorescence\"><\/span><strong>Ph\u00e1t hu\u1ef3nh quang (Fluorescence)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>M\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u ph\u00e1t ra \u00e1nh s\u00e1ng khi \u0111\u01b0\u1ee3c \u0111\u1eb7t d\u01b0\u1edbi tia c\u1ef1c t\u00edm (UV), \u0111\u00e2y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ph\u00e1t hu\u1ef3nh quang. \u00c1nh s\u00e1ng m\u1eb7t tr\u1eddi v\u00e0 \u0111\u00e8n hu\u1ef3nh quang ph\u00e1t ra m\u1ed9t s\u1ed1 tia c\u1ef1c t\u00edm (UV), v\u00e0 nhi\u1ec1u lo\u1ea1i \u0111\u00e1 qu\u00fd ph\u00e1t hu\u1ef3nh quang khi \u0111\u1eb7t d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n n\u00e0y.<\/p>\n\n\n\n<p>Ph\u00e1t hu\u1ef3nh quang l\u00e0m cho spinel \u0111\u1ecf th\u00eam ph\u1ea7n r\u1ef1c r\u1ee1. N\u00f3 c\u0169ng l\u00e0m t\u0103ng m\u00e0u \u0111\u1ecf c\u1ee7a Ruby gi\u00e0u chromium. Nh\u01b0ng Ruby t\u1eeb m\u1ed9t s\u1ed1 ngu\u1ed3n g\u1ed1c th\u00ec gi\u00e0u s\u1eaft, v\u00e0 s\u1eaft l\u00e0 ch\u1ea5t c\u1ea3n ph\u00e1t hu\u1ef3nh quang n\u00ean nh\u1eefng lo\u1ea1i Ruby n\u00e0y kh\u00f4ng ph\u00e1t hu\u1ef3nh quang d\u01b0\u1edbi tia c\u1ef1c t\u00edm. Th\u00f4ng th\u01b0\u1eddng, Ruby ph\u00e1t hu\u1ef3nh quang th\u00ec c\u00f3 gi\u00e1 tr\u1ecb cao h\u01a1n nh\u1eefng lo\u1ea1i kh\u00f4ng ph\u00e1t hu\u1ef3nh quang, m\u1eb7c d\u00f9 \u1edf m\u1ed9t kh\u00eda c\u1ea1nh kh\u00e1c th\u00ec ph\u00e1t hu\u1ef3nh quang c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 chi\u1ebfu s\u00e1ng c\u1ee7a vi\u00ean \u0111\u00e1.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"738\" height=\"458\" src=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-11.jpg\" alt=\"\" class=\"wp-image-5598\" srcset=\"https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-11.jpg 738w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-11-300x186.jpg 300w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-11-150x93.jpg 150w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-11-696x432.jpg 696w, https:\/\/www.pnj.com.vn\/blog\/wp-content\/uploads\/2021\/08\/mau-sac-tu-van-da-quy-da-ban-quy-11-356x220.jpg 356w\" sizes=\"(max-width: 738px) 100vw, 738px\" title=\"\"><figcaption>Ph\u00e1t hu\u1ef3nh quang m\u00e0u \u0111\u1ecf c\u00f3 th\u1ec3 l\u00e0m t\u0103ng m\u00e0u \u0111\u1ecf trong m\u1ed9t s\u1ed1 lo\u1ea1i ruby gi\u00e0u chromium &#8211; \u1ea2nh: Benjamin Zucker\/Precious Stone Company, New York<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hieu_ung_doi_mau_Color_change\"><\/span><strong>Hi\u1ec7u \u1ee9ng \u0111\u1ed5i m\u00e0u (Color change)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>M\u1ed9t vi\u00ean \u0111\u00e1 c\u00f3 nh\u1eefng m\u00e0u s\u1eafc kh\u00e1c nhau d\u01b0\u1edbi nh\u1eefng lo\u1ea1i \u00e1nh s\u00e1ng kh\u00e1c nhau, g\u1ecdi l\u00e0 hi\u1ec7u \u1ee9ng \u0111\u1ed5i m\u00e0u. Chromium v\u00e0 vanadium l\u00e0 nh\u1eefng ch\u1ea5t t\u1ea1o m\u00e0u th\u01b0\u1eddng g\u00e2y ra hi\u1ec7u \u1ee9ng \u0111\u1ed5i m\u00e0u trong \u0111\u00e1 qu\u00fd.<\/p>\n\n\n\n<p>\u0110\u1ed5i m\u00e0u xu\u1ea5t hi\u1ec7n trong alexandrite chrysoberyl, Sapphire v\u00e0 Garnet \u0111\u1ed5i m\u00e0u b\u1edfi v\u00ec nh\u1eefng lo\u1ea1i \u0111\u00e1 n\u00e0y cho ph\u00e9p truy\u1ec1n qua m\u00e0u \u0111\u1ecf v\u00e0 l\u1ee5c c\u1ee7a ph\u1ed5 g\u1ea7n nh\u01b0 b\u1eb1ng nhau. Nh\u1eefng lo\u1ea1i \u0111\u00e1 n\u00e0y c\u00f3 nh\u1eefng th\u00e2n m\u00e0u kh\u00e1c nhau, ph\u1ee5 thu\u1ed9c v\u00e0o lo\u1ea1i \u00e1nh s\u00e1ng m\u00e0 ch\u00fang ti\u1ebfp x\u00fac. V\u00ed d\u1ee5: alexandrite c\u00f3 m\u00e0u \u0111\u1ecf d\u01b0\u1edbi \u00e1nh s\u00e1ng s\u1ee3i quang (lo\u1ea1i \u00e1nh s\u00e1ng gi\u00e0u m\u00e0u \u0111\u1ecf) v\u00e0 c\u00f3 m\u00e0u l\u1ee5c d\u01b0\u1edbi \u00e1nh s\u00e1ng hu\u1ef3nh quang (gi\u00e0u m\u00e0u lam v\u00e0 l\u1ee5c).<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u00c1nh s\u00e1ng s\u1ee3i quang<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>\u00c1nh s\u00e1ng hu\u1ef3nh quang<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Alexandrite<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/pnjlab.com.vn\/App_Upload\/FckEditor\/image\/12(1).jpg\" width=\"150\" height=\"98\" title=\"\">&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/pnjlab.com.vn\/App_Upload\/FckEditor\/image\/13.jpg\" width=\"150\" height=\"97\" title=\"\">&nbsp;<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Sapphire<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/pnjlab.com.vn\/App_Upload\/FckEditor\/image\/14.jpg\" width=\"150\" height=\"172\" title=\"\">&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/pnjlab.com.vn\/App_Upload\/FckEditor\/image\/15.jpg\" width=\"150\" height=\"174\" title=\"\">&nbsp;<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Garnet<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/pnjlab.com.vn\/App_Upload\/FckEditor\/image\/16.jpg\" width=\"150\" height=\"136\" title=\"\">&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" alt=\"\" src=\"https:\/\/pnjlab.com.vn\/App_Upload\/FckEditor\/image\/17.jpg\" width=\"150\" height=\"136\" title=\"\">&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>M\u1eb7c d\u00f9 m\u00e0u th\u00ec kh\u00e1c nhau d\u01b0\u1edbi m\u1ed7i ngu\u1ed3n s\u00e1ng, nh\u1eefng t\u00f4ng (tone) v\u00e0 \u0111\u1ed9 b\u00e3o h\u00f2a (saturation) th\u00ec lu\u00f4n lu\u00f4n b\u1eb1ng nhau. Khi \u0111\u00e1nh gi\u00e1 nh\u1eefng vi\u00ean \u0111\u00e1 \u0111\u1ed5i m\u00e0u, tr\u01b0\u1edbc ti\u00ean n\u00ean ki\u1ec3m tra ch\u00fang d\u01b0\u1edbi \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi, sau \u0111\u00f3 chuy\u1ec3n sang \u00e1nh s\u00e1ng s\u1ee3i quang. Xem x\u00e9t m\u1ee9c \u0111\u1ed9 v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a s\u1ef1 \u0111\u1ed5i m\u00e0u. Trong alexandrite, n\u1ebfu m\u00e0u l\u1ee5c \u0111\u1ed5i th\u00e0nh m\u00e0u \u0111\u1ecf m\u1ed9t c\u00e1ch r\u00f5 r\u1ec7t th\u00ec vi\u00ean \u0111\u00e1 c\u00f3 gi\u00e1 tr\u1ecb r\u1ea5t cao.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>M\u1ed7i m\u1ed9t lo\u1ea1i \u0111\u00e1 qu\u00fd th\u01b0\u1eddng c\u00f3 m\u1ed9t m\u00e0u \u0111\u1eb7c tr\u01b0ng, \u0111\u00e2y c\u0169ng l\u00e0 m\u00e0u \u0111\u1eb9p nh\u1ea5t v\u00e0 gi\u00e1 tr\u1ecb nh\u1ea5t c\u1ee7a lo\u1ea1i \u0111\u00e1 \u0111\u00f3. Nh\u01b0 ruby th\u00ec m\u00e0u \u0111\u1eb7c tr\u01b0ng l\u00e0 m\u00e0u \u0111\u1ecf \u0111\u1eadm v\u00e0 \u0111\u1ecf ph\u1edbt t\u00eda (m\u00e0u \u0111\u1eb9p nh\u1ea5t th\u01b0\u1eddng \u0111\u1ecf nh\u01b0 huy\u1ebft b\u1ed3 c\u00e2u). Ch\u00fang ta h\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u c\u00e1c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[21,7],"tags":[],"_links":{"self":[{"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/posts\/5587"}],"collection":[{"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/comments?post=5587"}],"version-history":[{"count":4,"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/posts\/5587\/revisions"}],"predecessor-version":[{"id":11362,"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/posts\/5587\/revisions\/11362"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/media\/6142"}],"wp:attachment":[{"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/media?parent=5587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/categories?post=5587"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pnj.com.vn\/blog\/wp-json\/wp\/v2\/tags?post=5587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}