Classification of gemstones.
Unlike the colorless ones, colored stones can be divided into two groups: chemical compounds on its own, solid color, independent or only slightly dependent on impurities, and compounds of variable color, …
Diamonds Emeralds Rubies Sapphires
Classification of gemstones.
Unlike the colorless ones, colored stones can be divided into two groups: chemical compounds on its own, solid color, independent or only slightly dependent on impurities, and compounds of variable color, …
Diament belongs to the most valued gemstones. The name of the diamond comes from the Greek word adamas - invincible, what is related to its properties, primarily with hardness, the greatest of all minerals. Another distinctive feature of a diamond is its particularly strong luster, called …
Gems, like all minerals, have a specific chemical composition. The elements occurring in them are generally common elements, which are common components of minerals.
The most common element is oxygen O. Except for the diamond, which is pure carbon, …