Carnelian and Howlite Physical Properties

Carnelian

Howlite

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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

2.58-2.64

2.45-2.58

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Absent

None

1.7 Mohs Hardness

6.5-7

3-3.5

1.8 Chemical Composition

SiO₂

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

Carnelian and Howlite Chemical Formula

While comparing Carnelian and Howlite 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 Carnelian and Howlite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Carnelian Vs Prasiolite

Carnelian Vs Quartz

Carnelian Vs Kunzite

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Carnelian and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnelian and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Howlite Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 2.45-2.58 whereas that of Howlite is 2.45-2.58.