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Carnelian
Carnelian

Brazilianite
Brazilianite



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Carnelian
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Carnelian and Brazilianite 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
2.98-2.99
1.5 Fracture
Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Conchoidal, Gems
1.6 Cleavage
Absent
(010) Distinct to good
1.7 Mohs Hardness
6.5-7
5.5
1.8 Chemical Composition
SiO2
NaAl 3(PO 4) 2(OH) 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Carnelian and Brazilianite Chemical Formula

While comparing Carnelian and Brazilianite 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 Brazilianite chemical formula.

  • Chemical formula of Carnelian- SiO2
  • Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Carnelian and Brazilianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnelian and Brazilianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Brazilianite Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 2.98-2.99 whereas that of Brazilianite is 2.98-2.99.