Topaz and Scapolite Physical Properties

Topaz

Scapolite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.49-3.572.58-2.74

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Splintery

1.6 Cleavage

[001] Perfect

{100} Distinct, {110} Distinct

1.7 Mohs Hardness

85.5-6

2 10

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

Topaz and Scapolite Chemical Formula

While comparing Topaz and Scapolite 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 Scapolite chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

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Topaz and Scapolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Scapolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Scapolite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.58-2.74 whereas that of Scapolite is 2.58-2.74.