Verdelite and Chrysoprase Physical Properties

Verdelite

Chrysoprase

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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

2.90-3.402.58-2.64

1 7.18

1.5 Fracture

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

Gems, Sixth Edition (2006)

1.6 Cleavage

Not Available

None

1.7 Mohs Hardness

7-7.56.5-7

2 10

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

SiO₂ (with a high level of nickel impurities )

Verdelite and Chrysoprase Chemical Formula

While comparing Verdelite and Chrysoprase 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 Verdelite and Chrysoprase chemical formula.

Chemical formula of Verdelite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )

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Verdelite and Chrysoprase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Verdelite and Chrysoprase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Verdelite and Chrysoprase Optical Properties during the identification of gemstone. Specific gravity of Verdelite is 2.58-2.64 whereas that of Chrysoprase is 2.58-2.64.