Black Calcite, The Sparkling Birthstone for July 15th
Birthstone for July 15th: Black Calcite Description of Black Calcite Black Calcite is a mesmerizing variety of the calcite family, known for its deep, opaque black color. This stone, like other calcites, has a smooth, slightly waxy texture and often displays subtle striations along its surface. Black Calcite is often found in massive or granular forms, though it can also appear as crystalline aggregates in some regions. As with all calcite, Black Calcite is relatively soft, with a Mohs hardness of around 3, making it easy to carve and polish....