Calcite Specimen 3.5" Green Aventurine and aid in soothing of

and aid in soothing of emotions

they are small and can be placed in a pocket

5-2 inches in size

Stibnite has a long history of use in various industries due to its unique properties

Calcite Specimen 3.5" Green Aventurine and aid in soothing ofThis unusual spiky Calcite specimen comes to us all the way from the Tonglushan Mine, Hubei Province in China! This Calcite specimen features intricate points of various heights while displaying a color combination of ruddish red and brown. 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?