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Heliodor
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Sardonyx
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Heliodor
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Sardonyx
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Sardonyx
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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
-
Indiscernible
7.5
Be
3
Al
2
Si
6
O
18
-
-
-
2.55-2.70
-
None
6.5-7
SiO 2Ulrich Henn and Claudio C.
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