Grandidierite and Peridot Physical Properties

Grandidierite

Peridot

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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

2.85-3.001.54-1.55

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

Perfect

Poor

1.7 Mohs Hardness

7.56.5-7

2 10

1.8 Chemical Composition

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

(Mg,Fe)₂SiO₄

Grandidierite and Peridot Chemical Formula

While comparing Grandidierite and Peridot 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 Peridot chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Peridot- (Mg,Fe)₂SiO₄

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Grandidierite and Peridot Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Peridot Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Peridot Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 1.54-1.55 whereas that of Peridot is 1.54-1.55.