Beryl and Howlite Physical Properties

Beryl

Howlite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.90

2.45-2.58

1.5 Fracture

Uneven, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Conchoidal, Irregular, Uneven, Gems, Brittle

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

1.6 Cleavage

Imperfect on {0001}

None

1.7 Mohs Hardness

7.5-8

3-3.5

1.8 Chemical Composition

Be₃Al₂Si₆O₁₈

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

Beryl and Howlite Chemical Formula

While comparing Beryl 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 Beryl and Howlite chemical formula.

Chemical formula of Beryl- Be₃Al₂Si₆O₁₈
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Beryl and Howlite Specific Gravity

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