Howlite and Rubellite Tourmaline Physical Properties

Howlite

Rubellite Tourmaline

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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

2.45-2.58Not Available

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

None

1.7 Mohs Hardness

3-3.52.5-3

2 10

1.8 Chemical Composition

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Howlite and Rubellite Tourmaline Chemical Formula

While comparing Howlite and Rubellite Tourmaline 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 Howlite and Rubellite Tourmaline chemical formula.

Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Rubellite Tourmaline- Ag

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Howlite and Rubellite Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Howlite and Rubellite Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Rubellite Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Howlite is Not Available whereas that of Rubellite Tourmaline is Not Available.