Rough Crystal Quartz / 25-40mm 1 Kilo Lot jewelry Obsidian is formed through the

Obsidian is formed through the rapid cooling of molten lava

Polished 7 Stone Butterfly

Points measure approximately 1 inch

925 Sterling Silver Malachite Rings

When exposed to air

Rough Crystal Quartz / 25-40mm 1 Kilo Lot jewelry Obsidian is formed through theQuantity: 1 kilogram Average size range: 25 to 40 millimeters Quartz is one of the most common minerals found in the Earth's crust and takes on a variety of colors depending on the other minerals and trace elements included as it forms and grows. These pieces comprise primarily rock crystal and white quartz, the latter taking its color from tiny inclusions of fluid or gas while it is formed.