Calcite on Limestone Specimen Size:Large Crystals 3" x 3" x 3" Labradorite is known for its

Labradorite is known for its changing colors

Amethyst is a type of quartz that is known for its purple color and is said to have healing properties

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Calcite on Limestone Specimen Size:Large Crystals 3" x 3" x 3" Labradorite is known for itsThese incredible Limestone specimens feature unique reflective pieces of Calcite within. These Calcite on Limestone Specimen display a cool blue with translucent clusters of Calcite. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 3 as "calcite". How is calcite formed? Calcite can form by direct precipitation from waters rich in