1 Physical Properties
1.1 Tenacity
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1.2 Solubility
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1.3 Durability
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1.4 Specific Gravity
1.5 Fracture
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
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1.6 Cleavage
{010} Perfect, {110} Perfect
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1.7 Mohs Hardness
1.8 Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Y 3Al 5O 12Ulrich Henn and Claudio C.