Research Library

Pinctada maxima cultured pearls grown beadless in the mantle

Pinctada maxima cultured pearls grown beadless in the mantle. Published in Gems & Gemology, 2008.

Author(s): H.A. Haenni

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Natural impregnation of a rock by copper minerals

Natural impregnation of a rock by copper minerals. Published in Gems & Gemology, 2008.

Author(s): H.A. Haenni

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Einige Gedanken zu Jadeit-Jade

Einige Gedanken zu Jadeit-Jade. Published in Zeitschrift der Deutschen Gemmologischen Gesellschaft, 2008.

Author(s): H.A. Haenni

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