Black Tourmaline fossils a form of quartz

a form of quartz

with the chemical formula Be3Al2(SiO3)6

- Hardness: 9 on the Mohs scale

with pyrite (FeS₂) and calcite (CaCO₃) inclusions

Amethyst is a variety of quartz colored by trace amounts of iron and natural irradiation during crystal growth

Black Tourmaline fossils a form of quartzSize: 7 X 4 X 6 Cm (Avg) Weight: 500 Grams (Avg) Location: India Product Description Black Tourmaline is a deep black boron silicate mineral known for its natural striated crystal structure. This material features a polished top head while retaining its natural rough body, highlighting both the crystal texture and polished finish. Sourced from India, it has a hardness of 77. 5 on the Mohs scale, making it durable for display and decorative use. The