Spinel and Rhodizite Physical Properties

Spinel

Rhodizite

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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

3.64-3.663.34-3.44

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

None, but may exhibit slight parting

{111} Indistinct, {111} Indistinct, {111} Indistinct

1.7 Mohs Hardness

88-8.5

2 10

1.8 Chemical Composition

MgAl₂O₄

(K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Spinel and Rhodizite Chemical Formula

While comparing Spinel and Rhodizite 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 Rhodizite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Rhodizite- (K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Spinel and Rhodizite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Rhodizite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Rhodizite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 3.34-3.44 whereas that of Rhodizite is 3.34-3.44.