Amethyst and Wulfenite Physical Properties

Amethyst

Wulfenite

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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

2.656.50-7.00

1 7.18

1.5 Fracture

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

Irregular, Brittle, Conchoidal

1.6 Cleavage

Indiscernible

On {011}, distinct; on {001}, {013}, indistinct

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

SiO₂

PbMoO 4Walter Schumann , Gemstones of the world (2001)

Amethyst and Wulfenite Chemical Formula

While comparing Amethyst and Wulfenite 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 Wulfenite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Amethyst and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.