Tourmaline and Coral Physical Properties

Tourmaline

Coral

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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

2.85-3.35

2.60-2.70

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Irregular, Irregular, Gemstones of the world (2001)

1.6 Cleavage

Indistinct

Not Available

1.7 Mohs Hardness

7-7.5

3-4

1.8 Chemical Composition

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

CaCO 3Ulrich Henn and Claudio C.

Tourmaline and Coral Chemical Formula

While comparing Tourmaline and Coral 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 Tourmaline and Coral chemical formula.

Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.

Compare Semi Precious Gemstones

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Tourmaline Vs Citrine

Tourmaline Vs Amethyst

Tourmaline and Coral Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tourmaline and Coral Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Coral Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.60-2.70 whereas that of Coral is 2.60-2.70.