Amethyst and Periclase Physical Properties

Amethyst

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.653.7-3.9

1 7.18

2.5 Fracture

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

Conchoidal, Brittle

2.6 Cleavage

Indiscernible

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

2.7 Mohs Hardness

75.5-6

2 10

2.11 Chemical Composition

SiO₂

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Amethyst and Periclase Chemical Formula

While comparing Amethyst 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 Amethyst and Periclase chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Amethyst and Periclase Specific Gravity

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