الكالسيت في ورقة - kauwgom-verwijderen
الكالسيت: Buy Loose الكالسيت at Wholesale Prices من عند ... الكالسيت. Calcite is a carbonate mineral and is the most stable form of calcium carbonate. With a hardness of only 3 on the Mohs scale, it can only be used in jewelry that won't be subject to knocks or scratches, such as earrings and pendants.