Schmetzer, Karl

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Journal Article

Schmetzer, Karl; Malsy, Anna-Kathrin (2011). Natural alexandrite with an irregular growth pattern, a case study. The Journal of the Gemmological Association of Hong Kong, XXXII(1-10), pp. 68-76. Gemmological Association of Hong Kong

Schmetzer, Karl; Malsy, Anna-Kathrin (2011). Alexandrite and colour-change chrysoberyl from the Lake Manyara alexandrite-emerald deposit in northern Tanzania. Journal of gemmology, 32(5-8), pp. 179-209. Gemmological Association of Great Britain

Schmetzer, Karl; Malsy, Anna-Kathrin; Stocklmayer, V.; Stocklmayer, S. (2011). Alexandrites from the Novello alexandrite-emerald deposit, Masvingo District, Zimbabwe. The Australian Gemmologist, 24(6), pp. 133-147. Gemmological Association of Australia

Schmetzer, Karl; Krzemnicki, Michael; Hänni, Henry; Bernhardt, Heinz-Jürgen; Pettke, Thomas (2007). Gem-quality taaffeites and muscravites from Africa. Journal of gemmology, 30(7-8), pp. 367-382. London: Gemmological Association of Great Britain

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