Nephrite and Siderite Physical Properties

Nephrite

Siderite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.103.83-3.89

1 7.18

1.5 Fracture

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

Uneven, Conchoidal, UnevenArthur Thomas, Brittle

1.6 Cleavage

Not Available

Perfect on {01 1 1}

1.7 Mohs Hardness

6-6.53.5-4.5

2 10

1.8 Chemical Composition

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

Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Nephrite and Siderite Chemical Formula

While comparing Nephrite and Siderite 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 Siderite 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 Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Nephrite and Siderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nephrite and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Siderite Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 3.83-3.89 whereas that of Siderite is 3.83-3.89.