Attend Gem and mineral shows to see numerous types of gypsum specimens and master from knowledgeable collectors. Rehydration: Certainly one of gypsum’s unique properties is its capability to reabsorb water and return to its first hydrated type when it will come into connection with dampness. Calcite has 3 great cleavages https://www.propanraya.com/id/produk/eco-gypsum-ee-4050