Andradite Garnet and Precious Opal Physical Properties

Andradite Garnet

Precious Opal

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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

3.8-3.91.98-2.25

1 7.18

1.5 Fracture

Not Available

Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

6.5-7.55-6.5

2 10

1.8 Chemical Composition

Ca₃Fe³⁺₂Si₃O₁₂

SiO 2 · nH 2OGemdat.org , Management Team (2012)

Andradite Garnet and Precious Opal Chemical Formula

While comparing Andradite Garnet and Precious 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 Garnet and Precious Opal chemical formula.

Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂
Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)

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Andradite Garnet and Precious Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite Garnet and Precious Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite Garnet and Precious Opal Optical Properties during the identification of gemstone. Specific gravity of Andradite Garnet is 1.98-2.25 whereas that of Precious Opal is 1.98-2.25.