Ulexite and Prase Opal Physical Properties

Ulexite

Prase Opal

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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

1.65-1.991.98-2.25

1 7.18

1.5 Fracture

UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{010} Perfect, {110} Perfect

Not Available

1.7 Mohs Hardness

2-2.55-6.5

2 10

1.8 Chemical Composition

NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

SiO 2 + H 2OUlrich Henn and Claudio C.

Ulexite and Prase Opal Chemical Formula

While comparing Ulexite and Prase Opal 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 Ulexite and Prase Opal chemical formula.

Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Prase Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

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Ulexite and Prase Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ulexite and Prase Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ulexite and Prase Opal Optical Properties during the identification of gemstone. Specific gravity of Ulexite is 1.98-2.25 whereas that of Prase Opal is 1.98-2.25.