valuable gems best

Taaffeite

It costs from about 2.5 to 20 thousand dollars per gram, or from 500 to 4 thousand per carat. Taaffeite is a jewel of purple color said to be a million times rarer than diamonds. Because of its extreme rarity it is used only as a gemstone. Taaffeite is a very rare mineral , a complex of oxide (hydroxide), magnesium, beryllium and aluminum, which is close to the spinel and difficult distinguishable from it...

Taaffeite - The Most Expensive Substances in the World

materials, substances, the most expensive substances in the world, gold, which are the most expensive substances in the world,taaffeite, valuable gems, precious stone, jewel, jewel of purple color, expensive mineral, rare mineral, precious stones,