What is Aragonite?
Aragonite is a carbonate mineral, one of the two common, naturally occurring polymorphs of calcium carbonate. It’s primarily found in Spain, Morocco, and the United States. Aragonite is often used as a gemstone and is popular for its unique crystal formations and color variations.
Aragonite is a fascinating gemstone that comes in various colors, often including blues, browns, and whites. Its unique crystal formations make it a popular choice for collectors and for use in jewelry.
|Chemical Classification||Inorganic - Carbonate|
|Color||Typically white or colorless but can also be found in blues, browns, and yellows.|
|Luster||Vitreous to resinous.|
|Transparency||Transparent to translucent.|
|Occurrence||Spain (especially Aragon, from which it gets its name), Mexico, and Morocco.|
|Formation||Often found in sedimentary and hydrothermal environments, including hot springs and caves.|
|Diaphaneity||Transparent to translucent|
|Mohs Hardness||3.5 to 4|
|Diagnostic Properties||Twinning in star-shaped groups.|
|Pleochroism||Not observed in aragonite.|
|Optical Properties||Biaxial (-)|
|Refractive Index||1.529 - 1.685|
|Birefringence||0.098 - 0.100|
|2V angle||Measured: 18°|
|Dispersion||Not typically noted for its dispersion.|