Brazilianite and Fayalite Physical Properties

Brazilianite

Fayalite

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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

2.98-2.994.392

1 7.18

1.5 Fracture

Conchoidal, Gems

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

(010) Distinct to good

{010} moderate, {100} imperfect

1.7 Mohs Hardness

5.56.5-7

2 10

1.8 Chemical Composition

NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Brazilianite and Fayalite Chemical Formula

While comparing Brazilianite and Fayalite 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 Brazilianite and Fayalite chemical formula.

Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Brazilianite and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brazilianite and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brazilianite and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Brazilianite is 4.392 whereas that of Fayalite is 4.392.