Septarian Calcite Spheres / 40mm AVG - 1 KILO LOT Closeout These pieces are formed primarily

These pieces are formed primarily of rock crystal quartz

Lapis Lazuli Sterling Silver Pendant

Red Jasper is formed through the oxidation of iron-rich sediments in sedimentary environments

Pistachio calcite derives its pale green to blue-green color from chlorine inclusions

Bi-terminated Amethyst Cuff Bracelet / Gold Plated

Septarian Calcite Spheres / 40mm AVG - 1 KILO LOT Closeout These pieces are formed primarilyQuantity: 1 kilogram Average size range: 40 millimeters Septarian calcite formed when small marine animals died in volcanic eruptions millions of years ago. After sinking to the ocean floor and decomposing, they accumulated layers of sediment that formed balls or nodules. After eventually getting exposed to air these nodules dried out and cracked, and calcite deposits formed inside these cracks in distinct swirls and branching patterns.