Emerald and Periclase Physical Properties

Emerald

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

2.67-2.783.7-3.9

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

Imperfect on the [0001]

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

1.7 Mohs Hardness

7.5-85.5-6

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Emerald and Periclase Chemical Formula

While comparing Emerald and Periclase 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 Periclase chemical formula.

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

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Emerald and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Periclase Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.7-3.9 whereas that of Periclase is 3.7-3.9.