Dravite and Kyanite Physical Properties

Dravite

Kyanite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.03-3.183.53-3.65

1 7.18

1.5 Fracture

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

Splintery, Brittle, Metallic

1.6 Cleavage

{???} Indistinct

[100] perfect [010] imperfect with 79° angle between

1.7 Mohs Hardness

7-7.54-7

2 10

1.8 Chemical Composition

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Not Available

Dravite and Kyanite Chemical Formula

While comparing Dravite and Kyanite 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 Dravite and Kyanite chemical formula.

Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Compare Blue Gemstones

Dravite Vs Gahnite

Dravite Vs Gadolinium Gallium Garnet

Dravite Vs Fluorite

Dravite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.