Common worldwide, calcite is the principal component of limestones and marbels, and of most stalactites and stalagmites. … It comes in a wide range of colors, including yellow, brown, orange, gold, and colorless. Calcite has little intrinsic value since it is not rare.
Likewise, is calcite a crystal?
This clear rhombahedral crystal is calcium carbonate, a compound of calcium and carbon. It exists in three different mineral forms known as aragonite, vaterite and calcite. The most stable of the three is calcite, and that is the form of this crystal.
Similarly, is calcite a diamond? One mineral that is sometimes mistaken for a diamond is calcite. Calcite is a white-colored crystal that usually appears flat and blocky. … Diamond is the hardest known natural mineral, while calcite and other softer crystals will scratch easily with steel. Mica is another mineral that visitors often mistake for diamond.
In this way, why is calcite so rare?
Normally, a faceted stone breaks during cutting, and the finished gem is much smaller than the originally intended size. Therefore, a cut calcite over 50 carats is extremely rare.