Gemmology
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Calcite — specimen 0192, photo © NMNHS
Calcite — specimen 0192, photo © NMNHS

Calcitespecimen 0192

Origin

Southeast Asia
Thailand
Calcite — specimen 0192, locality map
Data

Weight: 4.14 ct; size: 11.61 | 9.71 | 4.95 mm; shape: oval; colour: light very slightly bluish green; very slightly greyish; clarity: translucent; cut: fair; treatment: none.
Notes

Clean specimen; cabochon style cut.

Other specimens
Calcite — specimen 0254Calcite — specimen 0433

More information from ‘Classification’


A major rock-forming mineral; in limestones, marbles, a common cement in sedimentary rocks, and as gangue in hydrothermal veins; in alkalic to mafic igneous rocks; common as speleothems in caves (Anthony et al., 2001—2005). There are specimens of 4440 carats (Arem, 1987: 60).