Amethyst and Moonstone Physical Properties

Amethyst

Moonstone

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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

2.652.56-2.60

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Indiscernible

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

1.7 Mohs Hardness

76-6.5

2 10

1.8 Chemical Composition

SiO₂

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

Amethyst and Moonstone Chemical Formula

While comparing Amethyst and Moonstone 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 Moonstone chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

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Amethyst Vs Moonstone

Amethyst and Moonstone Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Moonstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Moonstone Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.56-2.60 whereas that of Moonstone is 2.56-2.60.