Coral and Tourmaline Physical Properties

Coral

Tourmaline

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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

2.60-2.702.85-3.35

1 7.18

1.5 Fracture

Irregular, Irregular, Gemstones of the world (2001)

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

Indistinct

1.7 Mohs Hardness

3-47-7.5

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

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

Coral and Tourmaline Chemical Formula

While comparing Coral and Tourmaline 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 Coral and Tourmaline chemical formula.

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

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Coral and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Coral and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Coral and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Coral is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.