Sapphire and Tourmaline Physical Properties
Tenacity
Not Available
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.95-4.03
2.85-3.35
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None, but may exhibit parting
Indistinct
Chemical Composition
Al 2 O 3
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Sapphire and Tourmaline Chemical Formula
While comparing Sapphire and Tourmaline 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 Sapphire and Tourmaline chemical formula.
- Chemical formula of Sapphire- Al 2 O 3
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Sapphire and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sapphire and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.
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