Watermelon Tourmaline and Hardystonite Physical Properties

Watermelon Tourmaline

Hardystonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-3.403.396-3.443

1 7.18

1.5 Fracture

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

Brittle, Metallic

1.6 Cleavage

Not Available

[001] good, [100] and [110] fair

1.7 Mohs Hardness

7-7.53-4

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.

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Watermelon Tourmaline and Hardystonite Chemical Formula

While comparing Watermelon Tourmaline and Hardystonite 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 Watermelon Tourmaline and Hardystonite chemical formula.

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.
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

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Watermelon Tourmaline and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Watermelon Tourmaline and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Watermelon Tourmaline and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Watermelon Tourmaline is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.