Blue Tourmaline 3mm Table Cut Cube A Grade - 15-16 Inch Hydrogrossular Calcite is the one of

Calcite is the one of the most common minerals

Garnet was used as far back as the Bronze Age

Sapphires are precious gemstones

Petrified Wood Agate is formed from the petrifaction process of primeval trees over the course of many years

Blue Tourmaline 3mm Table Cut Cube A Grade - 15-16 Inch Hydrogrossular Calcite is the one ofBlue Tourmaline ranges in color from green to blue to yellow to green with black, milky white and clear, colorless inclusions. It is an aluminum borosilicate mixed with iron, magnesium and other metals that give it its color. Tourmaline occurs in nearly every color in the rainbow and its name derives from turmali, the Sinhalese word for mixed color precious stone. Tourmaline is unusual in that it is both pyroelectric and piezoelectric, meaning it