Sinhalite and Pleonaste Physical Properties

Sinhalite

Pleonaste

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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

3.46-3.503.80

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Not Available

1.6 Cleavage

Not Available

1.7 Mohs Hardness

6-78

2 10

1.8 Chemical Composition

MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Sinhalite and Pleonaste Chemical Formula

While comparing Sinhalite and Pleonaste 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 Sinhalite and Pleonaste chemical formula.

Chemical formula of Sinhalite- MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

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Sinhalite and Pleonaste Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sinhalite and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sinhalite and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Sinhalite is 3.80 whereas that of Pleonaste is 3.80.