1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.4 Solubility
Not Available
Not Available
1.7 Durability
Not Available
Not Available
1.9 Specific Gravity
2.55-2.703.04-3.17
1
7.18
1.12 Fracture
Not Available
Uneven, Uneven, Gemstones of the world (2001) More from other references
1.13 Cleavage
Not Available
{001} Indistinct, {???} Indistinct
1.14 Mohs Hardness
1.15 Chemical Composition
SiO 2Arthur Thomas , Gemstones (2009)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references