Colored gemstones of metamorphic origin: Progress report in understanding how they crystallize at depth in East Africa, the Hindu Kush, Pamir Mountains, and the Middle-Urals Ring Structure

The mineral zoisite is a calcium alumosilicate belonging to the class of silicates, more exactly sor

Synthesis methods to produce large and high-quality dia- mond for jewellery have been improved over

Euclase, monoclinic crystal system—is a seldomly occurring mineral and with a Mohs hardness of 7 a