Chrome Tourmaline and Common Opal Physical Properties

Chrome Tourmaline

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

2.85-3.351.98-2.50

1 7.18

3.6 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Conchoidal, Gemstones of the world (2001)

3.7 Cleavage

3,2

Not Available

3.8 Mohs Hardness

7-7.55.5-6.5

2 10

3.13 Chemical Composition

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

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

Chrome Tourmaline and Common Opal Chemical Formula

While comparing Chrome Tourmaline 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 Chrome Tourmaline and Common Opal chemical formula.

Chemical formula of Chrome Tourmaline- Tourmaline 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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Chrome Tourmaline and Common Opal Specific Gravity

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