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Carnelian
Carnelian

Grandidierite
Grandidierite



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Carnelian
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Grandidierite

Carnelian and Grandidierite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.58-2.64
2.85-3.00
1.5 Fracture
Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
1.6 Cleavage
Absent
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.

Carnelian and Grandidierite Chemical Formula

While comparing Carnelian 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 Carnelian and Grandidierite chemical formula.

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

Carnelian and Grandidierite Specific Gravity

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