Labradorite and Sellaite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
3.14-3.16
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Perfect on {010} and {110}
Mohs Hardness
6-6.5
5-5.5
Chemical Composition
(Na,Ca)1-2Si3-2O8
MgF 2Ulrich Henn and Claudio C.
Labradorite and Sellaite Chemical Formula
While comparing Labradorite and Sellaite 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 Sellaite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Sellaite- MgF 2Ulrich Henn and Claudio C.
Labradorite and Sellaite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Sellaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Sellaite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.14-3.16 whereas that of Sellaite is 3.14-3.16.