Periclase and Emerald Physical Properties

Periclase

Emerald

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

3.7-3.92.67-2.78

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

{001} perfect; {111} imperfect, may exhibit parting on , {011}

Imperfect on the [0001]

1.7 Mohs Hardness

5.5-67.5-8

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Be₃Al₂SiO₆

Periclase and Emerald Chemical Formula

While comparing Periclase 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 Periclase and Emerald chemical formula.

Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Emerald- Be₃Al₂SiO₆

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Periclase and Emerald Specific Gravity

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