Difference between revisions of "Gilson stone"
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== Description == | == Description == | ||
| − | The first imitation [ | + | 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 == | == Synonyms and Related Terms == | ||
Revision as of 09:14, 16 January 2014
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
Authority
- 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