Emerald and Tourmaline Physical Properties

Emerald

Tourmaline

Tourmaline and Emerald Physical Properties

Physical Properties

Tenacity

Not Available

Solubility

Not Available

Durability

Hard

Not Available

Specific Gravity

2.67-2.78

2.85-3.35

Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Cleavage

Imperfect on the [0001]

Indistinct

Mohs Hardness

7.5-8

7-7.5

Chemical Composition

Be₃Al₂SiO₆

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

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Emerald and Tourmaline Chemical Formula

While comparing Emerald and 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 Emerald and Tourmaline chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

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Emerald and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.