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Andradite
Andradite

Crystal Opal
Crystal Opal



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Andradite
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Crystal Opal

Andradite and Crystal Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
 
-
-
-
1.97-2.22
Conchoidal
None
5.5-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.

Andradite and Crystal Opal Chemical Formula

While comparing Andradite and Crystal Opal 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 Andradite and Crystal Opal chemical formula.

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Andradite and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite Vs Crystal Opal during the identification of gemstone. Specific gravity of Andradite is whereas that of Crystal Opal is .