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Lazurite
Demantoid
Demantoid and Lazurite Physical Properties
Summary
Astrology
Physical Properties
Optical Properties
Benefits
All
Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.75
3.77-3.95
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Not Available
Cleavage
Imperfect on {110}
Not Available
Mohs Hardness
5.5
6.5
Chemical Composition
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
Optical Properties >>
<< Astrology
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