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Alabaster
Alabaster

Topaz
Topaz



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Alabaster
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Topaz

Alabaster and Topaz Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.303.49-3.57
Amber
1 7.18
1.5 Fracture
Not Available
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
1.6 Cleavage
Not Available
[001] Perfect
1.7 Mohs Hardness
28
Amber
2 10
1.8 Chemical Composition
CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
Al2SiO4(F,OH)2

Alabaster and Topaz Chemical Formula

While comparing Alabaster and Topaz 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 Alabaster and Topaz chemical formula.

  • Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
  • Chemical formula of Topaz- Al2SiO4(F,OH)2

Alabaster and Topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alabaster and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alabaster and Topaz Optical Properties during the identification of gemstone. Specific gravity of Alabaster is 3.49-3.57 whereas that of Topaz is 3.49-3.57.