Spinel and Sunstone Physical Properties

Spinel

Sunstone

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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

3.64-3.662.62-2.65

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Gemstones of the world (2001)

1.6 Cleavage

None, but may exhibit slight parting

001

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

MgAl₂O₄

Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

Spinel and Sunstone Chemical Formula

While comparing Spinel and Sunstone 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 Sunstone chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

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Spinel and Sunstone Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Sunstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Sunstone Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.62-2.65 whereas that of Sunstone is 2.62-2.65.