Labradorite and Gahnite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
4.00-4.62
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Conchoidal, Uneven
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Indistinct parting on [111]
Mohs Hardness
6-6.5
7.5-8
Chemical Composition
(Na,Ca)1-2Si3-2O8
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Labradorite and Gahnite Chemical Formula
While comparing Labradorite and Gahnite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Labradorite and Gahnite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Labradorite and Gahnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.