Nephrite and Gedrite Physical Properties

Nephrite

Gedrite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.90-3.103.15-3.259

1 7.18

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Fracture

Splintery, Granular

Cleavage

None

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Mohs Hardness

6-6.55.5-6

2 10

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Chemical Composition

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

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Nephrite and Gedrite Chemical Formula

While comparing Nephrite and Gedrite 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 Gedrite 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 Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Nephrite Vs Rutilated Quartz

Nephrite and Gedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Nephrite and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Gedrite Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 3.15-3.259 whereas that of Gedrite is 3.15-3.259.