Quartz and Spinel Physical Properties

Quartz

Spinel

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

2.65

3.64-3.66

1.5 Fracture

Conchoidal, Conchoidal, Brittle, Gems

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{0110} Indistinct

None, but may exhibit slight parting

1.7 Mohs Hardness

1.8 Chemical Composition

SiO₂

MgAl₂O₄

Quartz and Spinel Chemical Formula

While comparing Quartz and Spinel 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 Quartz and Spinel chemical formula.

Chemical formula of Quartz- SiO₂
Chemical formula of Spinel- MgAl₂O₄

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Quartz and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Quartz and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Quartz and Spinel Optical Properties during the identification of gemstone. Specific gravity of Quartz is 3.64-3.66 whereas that of Spinel is 3.64-3.66.