Moonstone and Grandidierite Physical Properties

Moonstone

Grandidierite

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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

2.56-2.602.85-3.00

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Perfect

1.7 Mohs Hardness

6-6.57.5

2 10

1.8 Chemical Composition

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

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

Moonstone and Grandidierite Chemical Formula

While comparing Moonstone 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 Moonstone and Grandidierite chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Compare Semi Precious Gemstones

Moonstone Vs Alexandrite

Moonstone Vs Peridot

Moonstone Vs Lehsunia

Moonstone and Grandidierite Specific Gravity

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