Garnets from Madagascar with a color change of blue-green to purple

Gems and Gemology

Volumn 35, Issue 4, 1999, Pages 196-201

  Schmetzer, Karl ^a   Bernhardt, Heinz Jürgen ^b  

^a Ruhr University ^*

^b RUHR UNIVERSITY BOCHUM   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 52849098169     PISSN: 0016626X     EISSN: None     Source Type: Journal    
DOI: 10.5741/GEMS.35.4.196     Document Type: Article

References (15)

1. Deer W.A., Howie R.A., Zussman J. (1992) An Introduction to the Rock-Forming Minerals, 2nd ed. Longman Scientific and Technical, Essex, England.
2. Fryer C., Ed. (1982) Gem Trade Lab notes: Rare inclusion in diamond. Gems & Gemology, Vol. 18, No. 3, pp. 169-170.
3. Gübelin E., Schmetzer K. (1982) Gemstones with alexandrite effect. Gems & Gemology, Vol. 18, No. 4, pp. 197-203.
4. Johnson M.L., Koivula J.I., Eds. (1996a) Gem news: Color-change garnet. Gems & Gemology, Vol. 32, No. 1, p. 53.
5. Johnson M.L., Koivula J.I., Eds. (1996b) Gem news: A second Sri Lankan locality for color-change garnet. Gems & Gemology, Vol. 32, No. 4, pp. 285-286.
6. Johnson M.L., Koivula J.I., Eds. (1998a) Gem news: "Almost blue" Sri Lankan color-change garnets. Gems & Gemology, Vol. 34, No. 2, pp. 138-140.
7. Johnson M.L., Koivula J.I., Eds. (1998b) Gem news: Color-change pyrope-spessartine garnet, also from Madagascar. Gems & Gemology, Vol. 34, No. 3, pp. 222-223.
8. Koivula J.I., Kammerling R.C., Eds. (1988) Gem news: Change-of-color garnets. Gems & Gemology, Vol. 24, No. 3, pp. 176-177.
9. Liu Y., Shigley J.E., Fritsch E., Hemphill S. (1999) Colorimetric study of the alexandrite effect in gemstones. Journal of Gemmology, Vol. 26, No. 6, pp. 371-385.
10. Manson D.V., Stockton C.M. (1984) Pyrope-spessartine garnets with unusual color behavior. Gems & Gemology, Vol. 20, No. 4, pp. 200-207.
11. Mercier A., Moine B., Delorme J., Rakotondrazafy M.A.F. (1997) A note on a new occurrence of vanadian grossular garnet from Madagascar. Journal of Gemmology, Vol. 25, No. 6, pp. 391-393.
12. Schmetzer K., Bank H., Gübelin E. (1980) The alexandrite effect in minerals: Chrysoberyl, garnet, corundum, fluorite. Neues Jahrbuch für Mineralogie Abhandlungen, Vol. 138, No. 2, pp. 147-164.
13. Schmetzer K., Ottemann J. (1979) Kristallchemie und Farbe Vanadium-haltiger Granate. Neues Jahrbuch für Mineralogie Abhandlungen, Vol. 136, No. 2, pp. 146-168.
14. Stockton C.M. (1982) Two notable color-change garnets. Gems & Gemology, Vol. 18, No. 2, pp. 100-101.
15. Stockton C.M., Manson D.V. (1985) Editorial forum: Unusual color-change garnet. Gems & Gemology, Vol. 21, No. 2, pp. 116-117.