Amethyst and Orthoclase Physical Properties

Amethyst

Orthoclase

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.54-2.61

1 7.18

1.5 Fracture

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

Gems, Uneven

1.6 Cleavage

Indiscernible

Has perfect cleavage on {001} and good cleavage on {010}. Cleavages intersect at 90°.

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

SiO₂

KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Amethyst and Orthoclase Chemical Formula

While comparing Amethyst and Orthoclase 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 Orthoclase chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Orthoclase- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Amethyst and Orthoclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Orthoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Orthoclase Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.54-2.61 whereas that of Orthoclase is 2.54-2.61.