Moonstone and Amethyst Physical Properties

Moonstone

Amethyst

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

2.56-2.602.65

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

Indiscernible

1.7 Mohs Hardness

6-6.57

2 10

1.8 Chemical Composition

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

SiO₂

Moonstone and Amethyst Chemical Formula

While comparing Moonstone and Amethyst 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 Moonstone and Amethyst chemical formula.

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

Compare Semi Precious Gemstones

Moonstone Vs Peridot

Moonstone Vs Lehsunia

Moonstone Vs Alexandrite

Moonstone and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 2.65 whereas that of Amethyst is 2.65.