Forsterite and Labradorite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.23-3.26
2.69-2.72
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Cleavage
Perfect on {010} imperfect on {100}
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Mohs Hardness
6.5-7
6-6.5
Chemical Composition
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
(Na,Ca)1-2Si3-2O8
Forsterite and Labradorite Chemical Formula
While comparing Forsterite 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 Forsterite and Labradorite chemical formula.
- Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Forsterite and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Forsterite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.