Topaz and Legrandite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
3.98-4.04
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
[001] Perfect
Imperfect, poor one {100}
Chemical Composition
Al2SiO4(F,OH)2
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Legrandite Chemical Formula
While comparing Topaz and Legrandite 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 Topaz and Legrandite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Legrandite- Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Topaz and Legrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Legrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Legrandite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.98-4.04 whereas that of Legrandite is 3.98-4.04.