Calcite and Stibnite Cluster Specimen - China 7x3” tumbled This is an exquisite cluster

This is an exquisite cluster of small marine fossils (ammonites

and a sense of divine connection

purpose-driven work—adding even more heart to this beautiful

Colorado showcase a unique combination of sparkling calcite crystals and natural geode formations

Calcite and Stibnite Cluster Specimen - China 7x3” tumbled This is an exquisite clusterThis cluster is a fantastic combination of Calcite and Stibnite showcasing a gorgeous swirl pattern throughout the specimen. This Calcite and Stibnite Cluster also exhibits a sparkle of rare coloring of greys and creams. Frm Nandon China. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 3 as "calcite". How is calcite formed?