Spinel and Brazilianite Physical Properties

Spinel

Brazilianite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

none

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.662.98-2.99

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Gems

1.6 Cleavage

None, but may exhibit slight parting

(010) Distinct to good

1.7 Mohs Hardness

85.5

2 10

1.8 Chemical Composition

MgAl₂O₄

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

Spinel and Brazilianite Chemical Formula

While comparing Spinel 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 Spinel and Brazilianite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Gems for Scorpio

Spinel Vs Charoite

Spinel Vs Ametrine

Spinel Vs Azurmalachite

Spinel and Brazilianite Specific Gravity

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