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Topaz
Topaz

Dioptase
Dioptase



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Topaz
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Dioptase

Topaz and Dioptase Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.49-3.573.25-3.35
Amber
1 7.18
1.5 Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
1.6 Cleavage
[001] Perfect
Perfect in three directions
1.7 Mohs Hardness
85
Amber
2 10
1.8 Chemical Composition
Al2SiO4(F,OH)2
CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Topaz and Dioptase Chemical Formula

While comparing Topaz and Dioptase 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 Dioptase chemical formula.

  • Chemical formula of Topaz- Al2SiO4(F,OH)2
  • Chemical formula of Dioptase- CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Topaz and Dioptase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Dioptase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Dioptase Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.25-3.35 whereas that of Dioptase is 3.25-3.35.