Spinel and Holmquistite Physical Properties

Spinel

Holmquistite

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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

3.64-3.662.95-3.13

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

None, but may exhibit slight parting

{210} Perfect

1.7 Mohs Hardness

85-6

2 10

1.8 Chemical Composition

MgAl₂O₄

Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Spinel and Holmquistite Chemical Formula

While comparing Spinel and Holmquistite 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 Holmquistite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Holmquistite- Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Compare Gems for Scorpio

Spinel Vs Charoite

Spinel Vs Azurmalachite

Spinel Vs Ametrine

Spinel and Holmquistite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Holmquistite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Holmquistite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 2.95-3.13 whereas that of Holmquistite is 2.95-3.13.