Coral and Almandine Physical Properties

Coral

Almandine

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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

2.60-2.703.95-4.30

1 7.18

1.5 Fracture

Irregular, Irregular, Gemstones of the world (2001)

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

Not Available

none

1.7 Mohs Hardness

3-47-7.5

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Coral and Almandine Chemical Formula

While comparing Coral and Almandine 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 Almandine chemical formula.

Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Coral and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Coral and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Coral and Almandine Optical Properties during the identification of gemstone. Specific gravity of Coral is 3.95-4.30 whereas that of Almandine is 3.95-4.30.