Danburite and Charlesite Physical Properties

Danburite

Charlesite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.97-3.031.79

1 7.18

1.5 Fracture

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

Irregular/uneven, Brittle, Metallic

1.6 Cleavage

{001} Poor

Perfect on {10bar10}

1.7 Mohs Hardness

72.5

2 10

1.8 Chemical Composition

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

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Danburite and Charlesite Chemical Formula

While comparing Danburite and Charlesite 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 Charlesite chemical formula.

Chemical formula of Danburite- CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

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Danburite and Charlesite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Danburite and Charlesite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Danburite and Charlesite Optical Properties during the identification of gemstone. Specific gravity of Danburite is 1.79 whereas that of Charlesite is 1.79.