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Nosean
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Chrome-Chalcedony
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Gemstones
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Chrome-Chalcedony
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Summary
Astrology
Physical Properties
Optical Properties
Benefits
All
Physical Properties
Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
-
-
-
2.30-2.40
Uneven, Conchoidal
{110} Perfect
-9999
Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)
-
-
-
2.55-2.70
-
None
6.5-7
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Compare Blue Gemstones
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Blue Gemstones
Padparadscha
Papagoite
Pezzottaite
Phosphosiderite
Pleonaste
Powellite
Prase
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Prase Opal
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Precious Opal
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