Pearl and Coral Physical Properties

Pearl

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

2.60-2.85

2.60-2.70

1.5 Fracture

Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)

Irregular, Irregular, Gemstones of the world (2001)

1.6 Cleavage

none

Not Available

1.7 Mohs Hardness

2.5-4.5

3-4

1.8 Chemical Composition

Not Available

CaCO 3Ulrich Henn and Claudio C.

Pearl and Coral Chemical Formula

While comparing Pearl 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 Pearl and Coral chemical formula.

Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.

Compare Blue Gemstones

Pearl Vs Precious Opal

Pearl Vs Prase

Pearl Vs Prase Opal

Pearl and Coral Specific Gravity

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