Tourmaline and Emerald Physical Properties

Tourmaline

Emerald

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

2.85-3.35

2.67-2.78

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Indistinct

Imperfect on the [0001]

1.7 Mohs Hardness

7-7.5

7.5-8

1.8 Chemical Composition

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

Be₃Al₂SiO₆

Tourmaline and Emerald Chemical Formula

While comparing Tourmaline and Emerald 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 Tourmaline and Emerald chemical formula.

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

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Tourmaline and Emerald Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tourmaline and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Emerald Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.67-2.78 whereas that of Emerald is 2.67-2.78.