Prehnite and Labradorite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.80-2.95
2.69-2.72
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Cleavage
Distinct on [001]
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Mohs Hardness
6-6.5
6-6.5
Chemical Composition
Ca2Al2Si3O12(OH)
(Na,Ca)1-2Si3-2O8
Prehnite and Labradorite Chemical Formula
While comparing Prehnite and Labradorite 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 Prehnite and Labradorite chemical formula.
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Prehnite and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Prehnite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prehnite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Prehnite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.