Agate and Grandidierite Physical Properties

Agate

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

2.60-2.64

2.85-3.00

1.5 Fracture

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Indiscernible

Perfect

1.7 Mohs Hardness

6.5-7

7.5

1.8 Chemical Composition

SiO₂

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

Agate and Grandidierite Chemical Formula

While comparing Agate 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 Agate and Grandidierite chemical formula.

Chemical formula of Agate- SiO₂
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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Agate and Grandidierite Specific Gravity

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