Prehnite and Sugilite Physical Properties

Prehnite

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

2.80-2.952.69-2.79

1 7.18

1.5 Fracture

Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic

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

1.6 Cleavage

Distinct on [001]

Poor on {0001}

1.7 Mohs Hardness

6-6.55.5-6.5

2 10

1.8 Chemical Composition

Ca₂Al₂Si₃O₁₂(OH)

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

Prehnite and Sugilite Chemical Formula

While comparing Prehnite 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 Prehnite and Sugilite chemical formula.

Chemical formula of Prehnite- Ca₂Al₂Si₃O₁₂(OH)
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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Prehnite and Sugilite Specific Gravity

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