Dolomite is found as colorless, while, pink or yellow crystals, often with distinctive curved faces. Rarely faceted, because of us softness and perfect cleavage, its main use is in massive form, as a decorative stone

Found in limestones and marbles, the best crystals arc from Italy, Switzerland, Germany, and the USA.

Diamonds are graded by color. Cut, clarity and carat (weight) - the four c's.