Categories
Gemstone
gems of the world
historical gems
gemologist
gems mines
natural diamond
Diamonds
Diamond is a mineral composed of pure carbon. It is the most complex natural phenomenon we know; It is also a popular gemstone. Due to their hardness, diamonds have a variety of important industrial applications. Because the atomic arrangement in diamond is so rigid, only a few types of impurities can affect it (two exceptions are boron and nitrogen). Diamond colors are blue (boron), yellow (nitrogen), black (imperfections), green (reflecting rays), scarlet, purple, orange or scarlet.
Sapphire
Sapphire is a gemstone, Sapphire is one of two types of corundum gemstones, the other being ruby (described as corundum with shades of red). Although blue is the most popular sapphire, it is also available in other colors, including gray and black, and can also be colorless. The dark orange type of sapphire is called padparadscha.
natural sapphire
Fire Agate