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Mexican fire opal
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Chrome-Chalcedony
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Mexican fire opal
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Chrome-Chalcedony
Mexican fire opal
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
-
-
-
-9999
-
None
-9999
SiO2·nH2O
-
-
-
2.55-2.70
-
None
6.5-7
SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
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Blue Gemstones
Clinothulite
Pleonast
Bort
Color change garnet
Color change sapphire
Dumortierite quartz
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