Periclase and Grandidierite Physical Properties

Periclase

Grandidierite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.7-3.92.85-3.00

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

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

Perfect

1.7 Mohs Hardness

5.5-67.5

2 10

1.8 Chemical Composition

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Periclase and Grandidierite Chemical Formula

While comparing Periclase and Grandidierite 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 Periclase and Grandidierite chemical formula.

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

Compare Gems Found In Australia

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Periclase Vs Scheelite

Periclase and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Periclase and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Periclase and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Periclase is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.