Four Treasures Reference Database
Record No. 4798
Über die gemmologische bedeutung des gallium-nachweises in korunden
On the gemological significance of the detection of gallium in corundum
Journal Article
Hänni, H.A. and Stern, W.B. (1982) Über die gemmologische bedeutung des gallium-nachweises in korunden. [On the gemological significance of the detection of gallium in corundum] Zeitschrift der Deutschen Gemmologischen Gesellschaft, Vol. 31, pp. 255–260.
Language: In German | not seen
Close Abstract
Hide Keywords
Copy Reference
corundum, synthetic corundum.7, gems
Hänni and Stern investigate whether gallium can provide a useful chemical criterion for distinguishing natural from synthetic corundum. Using energy-dispersive X-ray fluorescence analysis, they examined 24 natural and eight synthetic corundums of various colors and origins. Gallium was detected in all of the natural specimens examined, whereas none was detected in the synthetic samples. The authors therefore propose gallium detection as a potentially valuable supplementary test for establishing natural origin, while recognizing the analytical detection limits involved.