There is a misconception weather Crystal (Chini (Chinese) Stone in Persian) comes from China or not

Onyx is a sort of pure stone. This stone possesses some characteristics which separates this stone from the other types.

The Lashtar Marble takes a black color with white veins after the processing.

Tekab Travertine is one of the colorful Travertines which is popular in Iran because of its unique beauty

The Yazd Chocolate Travertine is one of the best Chocolate stones