Piemontite and Sugilite Physical Properties

Piemontite

Sugilite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.69-2.79

1 7.18

1.5 Fracture

Uneven, Splintery

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

[001] good, [100] distinct

Poor on {0001}

1.7 Mohs Hardness

6-6.55.5-6.5

2 10

1.8 Chemical Composition

Not Available

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Piemontite and Sugilite Chemical Formula

While comparing Piemontite and Sugilite 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 Piemontite and Sugilite chemical formula.

Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Piemontite and Sugilite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Piemontite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Piemontite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Piemontite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.