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Prehnite
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Kyanite
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Prehnite
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Kyanite
Prehnite
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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
Brittle
-
-
2.80-2.95
Uneven
Distinct on [001]
6-6.5
Ca
2
Al
2
Si
3
O
12
(OH)
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5
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Sapphire
Tourmaline
Iolite
Kyanite
Peridot
Prasiolite
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Opal
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Morganite
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Astrology
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Kyanite Vs Iolite
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Kyanite Vs Peridot
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