Grandidierite and Rhodolite Physical Properties

Grandidierite

Rhodolite

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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

2.85-3.003.84

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

Perfect

none, may show indistinct parting

1.7 Mohs Hardness

7.57-7.5

2 10

1.8 Chemical Composition

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

(Mg,Fe)₃Al₂Si₃O₁₂

Grandidierite and Rhodolite Chemical Formula

While comparing Grandidierite and Rhodolite 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 Rhodolite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂

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Grandidierite and Rhodolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.84 whereas that of Rhodolite is 3.84.