Difference between revisions of "Gilson stone"
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imitation opal | imitation opal | ||
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* Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Opal (accessed Oct. 12, 2005) | * Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Opal (accessed Oct. 12, 2005) | ||
Revision as of 21:04, 30 April 2016
Description
The first imitation Opal was made by Pierre Gilson in the 1960s and first marketed in 1974. Gilson stone, as well as most other synthetic opals, contain an underlying honeycomb pattern that can be through a microscope. The stones can produce a full spectrum of colors.
Synonyms and Related Terms
imitation opal
Sources Checked for Data in Record
- Wikipedia, the free encyclopedia, at http://www.wikipedia.com Comment: http://en.wikipedia.org/wiki/Opal (accessed Oct. 12, 2005)
- Michael O'Donoghue and Louise Joyner, Identification of Gemstones, Butterworth-Heinemann, Oxford, 2003