Garnet and Common Opal Physical Properties

Garnet

Common 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

3.55-4.33

1.98-2.50

1.5 Fracture

Conchoidal, Uneven

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

Indistinct

Not Available

1.7 Mohs Hardness

6.5-7.5

5.5-6.5

1.8 Chemical Composition

Garnet is a series of several different minerals with unique chemical formulas.

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Garnet and Common Opal Chemical Formula

While comparing Garnet and Common 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 Garnet and Common Opal chemical formula.

Chemical formula of Garnet- Garnet is a series of several different minerals with unique chemical formulas.
Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

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Garnet and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Garnet and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Garnet and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Garnet is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.