Clear Optical Calcite / 1-3" AVG - 1 KILO LOT Menu raw crystal point pendants holes or no holes

holes or no holes

Opal is a gemstone featuring high water content

which then seal over

Septarian calcite formed when small marine animals died in volcanic eruptions millions of years ago

Pieces weigh approximately 3-5 kilo

Clear Optical Calcite / 1-3" AVG - 1 KILO LOT Menu raw crystal point pendants holes or no holesQuantity: 1 kilogram Average size range: 1 to 3 inches Optical calcite, also known as Iceland spar, is a special type of calcite that forms extremely clear and somewhat rectangular crystals. For centuries, sailors would use these crystals to help determine the direction of the sun on cloudy days for navigation.