Color
Green, Yellow, Brown, White, Colorless, Blue, Brownish, Black
White, Colorless, Blue, Red, Green, Yellow, Violet
Specific Gravity
2.36
-9999
Fracture
Uneven, Subconchoidal, Fibrous
-
Cleavage
[110] perfect, [101] good, [010] distinct
Perfect
Mohs Hardness
3.5-4
-9999
Chemical Composition
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgAl2O4
Luster
Vitreous, Resinous, Pearly
-
Refractive Index
1.518-1.561
-9999
Crystal System
Orthorhombic
-
Birefringence
0.025
-9999
Cardiovascular
Supports heart health
-
Healing
Emotional healing
-
Qualities Associated
Clarity
Protection