Elbaite and Chrysoprase Physical Properties

Elbaite

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

2.90-3.10

2.58-2.64

1.5 Fracture

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Gems, Sixth Edition (2006)

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

None

1.7 Mohs Hardness

6.5-7

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) More from other references

SiO₂ (with a high level of nickel impurities )

Elbaite and Chrysoprase Chemical Formula

While comparing Elbaite 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 Elbaite and Chrysoprase chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Chrysoprase- SiO₂ (with a high level of nickel impurities )

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Elbaite and Chrysoprase Specific Gravity

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