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- Title
Eljen Treated TURQUOISE.
- Authors
Owens, Philip A.; Eaton-Magaña, Sally
- Abstract
The article focuses on the results of a test conducted to some samples of turquoise treated by the proprietary process created by Eljen Stones. It describes the fluorescence shown by all the samples of turquoise following exposure to long-wave ultraviolet (UV) radiation. It attributes the luster of the polished stones to the hardness of such gems. Also noted is the consistency between the test findings and claims by the treater in terms of the hardness, cutting and polish quality of the gems.
- Subjects
TESTING; TURQUOISE; FLUORESCENCE; PHYSIOLOGICAL effects of ultraviolet radiation; LUSTER; HARDNESS; GEMS &; precious stones
- Publication
Gems & Gemology, 2009, Vol 45, Issue 2, p140
- ISSN
0016-626X
- Publication type
Article