Charlesite and Rock Crystal Physical Properties

Charlesite

Rock Crystal

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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

1.792.65

1 7.18

1.5 Fracture

Irregular/uneven, Brittle, Metallic

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

Perfect on {10bar10}

Not Available

1.7 Mohs Hardness

2.57

2 10

1.8 Chemical Composition

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

SiO 2Walter Schumann , Gemstones of the world (2001)

Charlesite and Rock Crystal Chemical Formula

While comparing Charlesite and Rock Crystal 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 Charlesite and Rock Crystal chemical formula.

Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

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Charlesite and Rock Crystal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charlesite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charlesite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Charlesite is 2.65 whereas that of Rock Crystal is 2.65.