Chrysoberyl and Ettringite Physical Properties

Chrysoberyl

Ettringite

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Physical Properties

Tenacity

Brittle

Solubility

Partially soluble in water

Durability

Specific Gravity

3.69-3.811.77

1 7.18

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Fracture

Uneven, Conchoidal to uneven, ConchoidalWalter Schumann

Cleavage

Distinct on {110}, imperfect on {010}, poor on {001}

Perfect on {10 1 0}

Mohs Hardness

8.52-2.5

2 10

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Chemical Composition

BeAl ₂ O ₄

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Chrysoberyl and Ettringite Chemical Formula

While comparing Chrysoberyl and Ettringite 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 Chrysoberyl and Ettringite chemical formula.

Chemical formula of Chrysoberyl- BeAl ₂ O ₄
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

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Chrysoberyl and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrysoberyl and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoberyl and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Chrysoberyl is 1.77 whereas that of Ettringite is 1.77.