Grandidierite and Periclase Physical Properties

Grandidierite

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.85-3.003.7-3.9

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

Perfect

{001} perfect; {111} imperfect, may exhibit parting on , {011}

1.7 Mohs Hardness

7.55.5-6

2 10

1.8 Chemical Composition

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

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Grandidierite and Periclase Chemical Formula

While comparing Grandidierite and Periclase 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 Periclase chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

Grandidierite Vs Hiddenite

Grandidierite Vs Hydrogrossular

Grandidierite Vs Hurlbutite

Grandidierite and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.