Shigaite and Chrome-Chalcedony Physical Properties

Shigaite

Chrome-Chalcedony

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.322.55-2.70

1 7.18

1.5 Fracture

Flexible Flexible fragments.

Not Available

1.6 Cleavage

Perfect on {0001}

Not Available

1.7 Mohs Hardness

26.5-7

2 10

1.8 Chemical Composition

Not Available

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

Shigaite and Chrome-Chalcedony Chemical Formula

While comparing Shigaite 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 Shigaite and Chrome-Chalcedony chemical formula.

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

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Shigaite and Chrome-Chalcedony Specific Gravity

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