Chrysoberyl and Watermelon Tourmaline Physical Properties

Chrysoberyl

Watermelon Tourmaline

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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

3.69-3.812.90-3.40

1 7.18

1.5 Fracture

Uneven, Conchoidal to uneven, Brittle, Metallic, Uneven, ConchoidalWalter Schumann, Brittle, Metallic

Uneven, Conchoidal, Uneven, Irregular, Conchoidal, Management Team (2012)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

8.57-7.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

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.

Chrysoberyl and Watermelon Tourmaline Chemical Formula

While comparing Chrysoberyl and Watermelon Tourmaline 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 Watermelon Tourmaline chemical formula.

Chemical formula of Chrysoberyl- BeAl ₂ O ₄
Chemical formula of Watermelon Tourmaline- 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.

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Chrysoberyl and Watermelon Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrysoberyl and Watermelon Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoberyl and Watermelon Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Chrysoberyl is 2.90-3.40 whereas that of Watermelon Tourmaline is 2.90-3.40.