Spinel and Bertrandite Physical Properties

Spinel

Bertrandite

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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

3.64-3.662.59-2.60

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

None, but may exhibit slight parting

{001} Perfect, {110} Distinct, {101} Distinct

1.7 Mohs Hardness

86-7

2 10

1.8 Chemical Composition

MgAl₂O₄

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Spinel and Bertrandite Chemical Formula

While comparing Spinel and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Spinel and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.