Aragonite is the name given to a family of chemically related stones. Aragonites form in wide range of colours, white or grey, and is often stained various hues by different trace elements present during formation staining it blue, green, red or violet. Formula: CaCO3 Lustre: Vitreous, Resinous Hardness: 3½ – 4 Specific Gravity: 2.947
Crystal System: Orthorhombic
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