General Information | ||||||||||||||
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A variety or type of: | Common Opal, which is a variety of Opal | |||||||||||||
Other Names/Trade Names: | ||||||||||||||
Chemical Formula |
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Physical Properties of Wood Opal | ||||||||||||||
Mohs Hardness | 5.5 to 6.5Gemstones of the world (2001) , | |||||||||||||
Specific Gravity | 1.98 to 2.50Gemstones of the world (2001) , | |||||||||||||
Tenacity | BrittleGemstones of the world (2001) , | |||||||||||||
Cleavage Quality | NoneGemstones of the world (2001) , | |||||||||||||
Optical Properties of Wood Opal | ||||||||||||||
Refractive Index | 1.37 to 1.52Gemstones of the world (2001) , | |||||||||||||
Colour | ||||||||||||||
Colour (General) | Yellowish, brownishGemstones of the world (2001) , | |||||||||||||
Further Information | ||||||||||||||
Mineral information: | Wood Opal information at mindat.org | |||||||||||||
Significant Gem Localities | ||||||||||||||
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