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Boulder Opal
Boulder Opal

Scheelite
Scheelite



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Boulder Opal
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Scheelite

Boulder Opal and Scheelite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

1.98-2.255.9-6.3
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

None
On {101}, distinct; on {112}, interrupted; on {001}, indistinct

Mohs Hardness

5-6.54.5-5
2 10
👆🏻

Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.
CaWO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Boulder Opal and Scheelite Chemical Formula

While comparing Boulder Opal and Scheelite 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 Boulder Opal and Scheelite chemical formula.

  • Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
  • Chemical formula of Scheelite- CaWO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Boulder Opal and Scheelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.