Emerald and Shigaite Physical Properties

Emerald

Shigaite

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1 Physical Properties

1.1 Tenacity

Not Available

Moderately ﬂexible

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

2.67-2.782.32

1 7.18

1.5 Fracture

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

Flexible Flexible fragments.

1.6 Cleavage

Imperfect on the [0001]

Perfect on {0001}

1.7 Mohs Hardness

7.5-82

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

Not Available

Emerald and Shigaite Chemical Formula

While comparing Emerald and Shigaite 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 Shigaite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆

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Emerald and Shigaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Shigaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Shigaite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.32 whereas that of Shigaite is 2.32.