Difference between revisions of "Gilson stone"
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m (Text replace - "== Authority ==" to "== Sources Checked for Data in Record ==") |
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imitation opal | imitation opal | ||
| − | == | + | ==Resources and Citations== |
| − | * Wikipedia | + | * Wikipedia: http://en.wikipedia.org/wiki/Opal (accessed Oct. 12, 2005) |
* Michael O'Donoghue and Louise Joyner, ''Identification of Gemstones'', Butterworth-Heinemann, Oxford, 2003 | * Michael O'Donoghue and Louise Joyner, ''Identification of Gemstones'', Butterworth-Heinemann, Oxford, 2003 | ||
Latest revision as of 13:48, 22 August 2022
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
Resources and Citations
- Wikipedia: http://en.wikipedia.org/wiki/Opal (accessed Oct. 12, 2005)
- Michael O'Donoghue and Louise Joyner, Identification of Gemstones, Butterworth-Heinemann, Oxford, 2003