Danburite and Apophyllite Physical Properties

Danburite

Apophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.97-3.032.30-2.50

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{001} Poor

Perfect on (001)

1.7 Mohs Hardness

74.5-5

2 10

1.8 Chemical Composition

CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Danburite and Apophyllite Chemical Formula

While comparing Danburite and Apophyllite 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 Danburite and Apophyllite chemical formula.

Chemical formula of Danburite- CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

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Danburite and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Danburite and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Danburite and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Danburite is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.