Rubellite Tourmaline and Spinel Physical Properties

Rubellite Tourmaline

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available3.64-3.66

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

None, but may exhibit slight parting

1.7 Mohs Hardness

2.5-38

2 10

1.8 Chemical Composition

MgAl₂O₄

Rubellite Tourmaline and Spinel Chemical Formula

While comparing Rubellite Tourmaline and Spinel 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 Rubellite Tourmaline and Spinel chemical formula.

Chemical formula of Rubellite Tourmaline- Ag
Chemical formula of Spinel- MgAl₂O₄

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Rubellite Tourmaline Vs Eilat stone

Rubellite Tourmaline and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite Tourmaline and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite Tourmaline and Spinel Optical Properties during the identification of gemstone. Specific gravity of Rubellite Tourmaline is 3.64-3.66 whereas that of Spinel is 3.64-3.66.