1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
Not Available3.95-4.10
1
7.18
1.5 Fracture
(e.g. graphite).
UnevenWalter Schumann, Gemstones of the world (2001) More from other references, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Uneven
1.6 Cleavage
{???} Imperfect, {???} Imperfect
{110} Perfect, {110} Perfect, {110} Perfect
1.7 Mohs Hardness
1.8 Chemical Composition
Not Available
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references