Carnelian and Faustite Physical Properties

Carnelian

Faustite

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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

2.58-2.64

2.9

1.5 Fracture

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

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Absent

{???} Indistinct

1.7 Mohs Hardness

6.5-7

4.5

1.8 Chemical Composition

SiO₂

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Carnelian and Faustite Chemical Formula

While comparing Carnelian and Faustite 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 Faustite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Carnelian and Faustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnelian and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Faustite Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 2.9 whereas that of Faustite is 2.9.