Calcite

Sold Individually What is it: Calcite is the one of the most common minerals and has a Mohs hardness of 3. It occurs in a great variety of shapes and colors, and it constitutes a major portion of many of the earth's rocks. Color is white or none, though...

Sold Individually What is it: Calcite is the one of the most common minerals and has a Mohs hardness of 3. It occurs in a great variety of shapes and colors, and it constitutes a major portion of many of the earth's rocks. Color is white or none, though...