Grandidierite and Johachidolite Physical Properties

Grandidierite

Johachidolite

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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

2.85-3.003.45

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Perfect

None

1.7 Mohs Hardness

7.57.5

2 10

1.8 Chemical Composition

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

CaAlB 3O 7Michael OâDonoghue , Gems, Sixth Edition (2006)

Grandidierite and Johachidolite Chemical Formula

While comparing Grandidierite and Johachidolite 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 Johachidolite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Johachidolite- CaAlB 3O 7Michael OâDonoghue , Gems, Sixth Edition (2006)

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Grandidierite and Johachidolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Johachidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Johachidolite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.45 whereas that of Johachidolite is 3.45.