Yellow Optical Calcite / 1.5-2.5" AVG - 1 LB. LOT Menu Animal Quantity: 75 grams

Quantity: 75 grams

Listing is for (10 kilograms

Silver Bail Agate Star Pendant

Avg Size Range: (2 to 3 inches)

chips measure approximately 4 to 7 millimeters) Sizes Vary

Yellow Optical Calcite / 1.5-2.5" AVG - 1 LB. LOT Menu Animal Quantity: 75 gramsQuantity: 1 pound Average size range: 1. 5 to 2. 5 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. This optical calcite also contains trace iron impurities, giving it a faint yellow tinge.