Zoisite and Chrome-Chalcedony Physical Properties

Zoisite

Chrome-Chalcedony

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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

3.20-3.502.55-2.70

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even

Not Available

1.6 Cleavage

Perfect {010} imperfect {100}

Not Available

1.7 Mohs Hardness

6-76.5-7

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

Zoisite and Chrome-Chalcedony Chemical Formula

While comparing Zoisite and Chrome-Chalcedony 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 Zoisite and Chrome-Chalcedony chemical formula.

Chemical formula of Zoisite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

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Zoisite and Chrome-Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Chrome-Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Chrome-Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 2.55-2.70 whereas that of Chrome-Chalcedony is 2.55-2.70.