Tenacity
Brittle
Slightly sectile
Solubility
-
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
-
-
Specific Gravity
-99992
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven
Cleavage
{1010} Imperfect, {0001} Imperfect
Prismatic {10 1 0}, perfect
Mohs Hardness
5-5.52-2.5
2
10
👆🏻
Chemical Composition
NiAs
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references