Grandidierite and Taaffeite Physical Properties

Grandidierite

Taaffeite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.85-3.003.60-3.61

1 7.18

1.5 Fracture

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

Conchoidal

1.6 Cleavage

Perfect

Imperfect/fair/absent

1.7 Mohs Hardness

7.58-8.5

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references

Grandidierite and Taaffeite Chemical Formula

While comparing Grandidierite and Taaffeite 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 Grandidierite and Taaffeite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Taaffeite- Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references

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Grandidierite and Taaffeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Taaffeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Taaffeite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.60-3.61 whereas that of Taaffeite is 3.60-3.61.