Shigaite and Emerald Physical Properties

Shigaite

Emerald

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

2.322.67-2.78

1 7.18

1.5 Fracture

Flexible Flexible fragments.

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

1.6 Cleavage

Perfect on {0001}

Imperfect on the [0001]

1.7 Mohs Hardness

27.5-8

2 10

1.8 Chemical Composition

Not Available

Be₃Al₂SiO₆

Shigaite and Emerald Chemical Formula

While comparing Shigaite 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 Shigaite and Emerald chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆

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Shigaite and Emerald Specific Gravity

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