Spinel and Moonstone Physical Properties

Spinel

Moonstone

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

none

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.662.56-2.60

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

None, but may exhibit slight parting

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

1.7 Mohs Hardness

86-6.5

2 10

1.8 Chemical Composition

MgAl₂O₄

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

Spinel and Moonstone Chemical Formula

While comparing Spinel 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 Spinel and Moonstone chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

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Spinel and Moonstone Specific Gravity

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