Amethyst and Thomsonite Physical Properties

Amethyst

Thomsonite

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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

2.652.25-2.40

1 7.18

1.5 Fracture

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

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Indiscernible

perfect on {010}; good on {100}

1.7 Mohs Hardness

75-5.5

2 10

1.8 Chemical Composition

SiO₂

NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Amethyst and Thomsonite Chemical Formula

While comparing Amethyst and Thomsonite 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 Thomsonite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Amethyst and Thomsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Thomsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Thomsonite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.25-2.40 whereas that of Thomsonite is 2.25-2.40.