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Dumortierite quartz
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Sapphire
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Dumortierite quartz
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Sapphire
Dumortierite quartz
Sapphire
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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
-
-
-9999
Al7BO3(SiO4)3O3
-
insoluble
-
3.95-4.03
Uneven
None, but may exhibit parting
9
Al
2
O
3
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