Labradorite and Covellite Physical Properties
Tenacity
Not Available
Flexible
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
4.6-4.76
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Perfect on {0001}
Mohs Hardness
6-6.5
Not Available
Chemical Composition
(Na,Ca)1-2Si3-2O8
CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Labradorite and Covellite Chemical Formula
While comparing Labradorite and Covellite 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 Covellite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Covellite- CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Labradorite and Covellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.