Nephrite and Andradite Garnet Physical Properties

Nephrite

Andradite Garnet

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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

2.90-3.103.8-3.9

1 7.18

1.5 Fracture

Splintery, Granular, Splintery, Granular, Gemstones (2009)

Not Available

1.6 Cleavage

Not Available

None

1.7 Mohs Hardness

6-6.56.5-7.5

2 10

1.8 Chemical Composition

Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

Ca₃Fe³⁺₂Si₃O₁₂

Nephrite and Andradite Garnet Chemical Formula

While comparing Nephrite and Andradite Garnet 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 Nephrite and Andradite Garnet chemical formula.

Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂

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Nephrite and Andradite Garnet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nephrite and Andradite Garnet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Andradite Garnet Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 3.8-3.9 whereas that of Andradite Garnet is 3.8-3.9.