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Gemstone, semiprecious

Semiprecious gem-with the variety of types, the richness of color as well as the prevalence varies gave us the curiosity, fascinated extraordinarily attractive. People have used to make beautiful gems from thousands of years and so far, it becomes more popular and artistic stature. 

In terms of material and gemstones are minerals (single mineral, multi-mineral) meet the conditions for cutting grinding, crafted jewelry, trinkets or ornaments ... In addition to the minerals used as gemstones then some organic formations are also used as gemstones such as pearls, amber, fangs, bones and horns of animals.

The main factors to assess the value of a gem include:

Color: 

Each gemstone usually has a specific color, this is also the best color and best value of such stones. As the ruby red color characteristic dark purple and red felt (best color red as blood pigeons often ...). Read more

Transparency cleanliness: 

Transparency is the ability for light to penetrate inside the stone. The more transparent the stone, the more sparkling color and higher values. Cleanliness is the level of impurities present in the stone, how can the less, the higher the degree of cleanliness .... Read more

Degree projection (fire - fire): 

Demonstrate the ability to reflect light of the stone, depending on the mineral dispersion. Rocks that dispersion greater the stronger the fire, sparkle of the stone higher .... Read more

Cut sense: 

Cutting machines (cut) is the way in which people make the appearance more beautiful stones. Apart from the natural elements, the cutter grinding also greatly affect the value of the stone, mainly due to ......  Read More

Weight: 

In the jewelry industry worldwide, people often use units of measurement is carat (abbreviated "ct") as a standard unit of measurement of the weight of gemstones, 1.00ct = 0.20g ...  Read more

Stiffness: 

Resistances of gemstones with the tiles scratch or abrasion is its hardness, denoted H. resistance depends on the strength of the binding force between the atoms together. To simplify, the strong binding force corresponding to the hard stones. Thus, stiffness is an important property, one of the key attributes precious stones, because the durability depends on it a lot ...  Read More

Count Rare: 

The value of gemstones is also evident in its rarity. No more beautiful stones as rare then as many hunters. Rarity of the gem has counted the time, it goes along with the discovery of new mines .... Read more

Trend: 

Customer tastes are dominant factors of great value gems, especially when combined with the tastes of rare gems. We often understand the tastes choice, personal preference or a certain group of people, so can call tastes a hobby. In the field of gems, tastes contributed to decide the value of the stone, for example, tsavorite Garnet are rarer emrerald, but from time immemorial by the needs of customers for emeralds still much greater should make the value its higher. In the group corundom ruby ​​(red) are often more rare quality sapphire blue (blue), rarity combined with the demand for stone ruby ​​red made usually have a higher value sapphire. Also in the type of sapphire blue sapphire (blue) is more common than other types of sapphire color, Read more