The Corundum consists of impurities or traces of iron, titanium, or chromium. Ruby and Pink Sapphire belong to the same mineral family, Corundum which is a crystalline form of aluminium oxide. As for emeralds, they are made of beryllium (beryls).Vivid red-hued Ruby and brilliant pink-hued Pink Sapphire gemstones at GemPundit However, when colored differently, the color is mentioned as a prefix to the sapphire ( i.e. When a corundum is red, it is classified as a ruby, and when it’s blue, it is called a sapphire. Both are made of alumina and oxygen, but they just differ in color. Scientifically speaking, rubies and sapphires are the same mineral (corundum).
The three other types of precious stones - rubies, sapphires and emeralds - are all referred to as "colored stones". They exist in over 300 colors and are the rarest and most precious type of stone. Diamonds are made from carbon, rubies and sapphires from alumina and emeralds from beryllium.ĭiamonds make up a category of their own. Each type has its own specific chemical and physical properties. There are four types of precious stones: diamonds, rubies, sapphires and emeralds. Additionally, diamonds are generally smaller than other colored stones: big color diamonds are rarer, which explains why they are much more expensive. The first obvious fact one can notice at first sight is that colored diamonds are always shinier than other colored stones. Orlov - Slightly Bluish Green - 189.60 ct.Incomparable - Fancy Brownish Yellow - 407.48 ct.Hope - Sapphire - Fancy Dark Grayish Blue - 45.52 ct.Great Chrysanthemum - Golden Brown 104.15 ct.Graff Pink - Fancy Intense Pink - 24.78 ct.Graff Imperial Blue - Fancy Blue - 39.81 ct.Golden Jubilee - Gold Brown - 755.50 ct.De Young Red - Fancy Dark Reddish Brown- 5.03 ct.Blue Moon - Fancy Vivid Blue - 12.03 ct.Allnatt - Fancy Vivid Yellow - 102.29 ct.
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