Umbalite and Nephrite Physical Properties

Umbalite

Nephrite

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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

3.62-4.332.90-3.10

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

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

1.6 Cleavage

Not Available

1.7 Mohs Hardness

7-7.56-6.5

2 10

1.8 Chemical Composition

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

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

Umbalite and Nephrite Chemical Formula

While comparing Umbalite and Nephrite 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 Umbalite and Nephrite chemical formula.

Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references

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Umbalite and Nephrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Umbalite and Nephrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Umbalite and Nephrite Optical Properties during the identification of gemstone. Specific gravity of Umbalite is 2.90-3.10 whereas that of Nephrite is 2.90-3.10.