Scientific Papers

Gemmology : A Selection of recent publications


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Black Pearls - Grey Pearls 

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Sannan-skarn, a new gemstone from Pakistan

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Natural pearls and cultured pearls: A basic concept and its variations

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Ein Schadensfall besonderer Art (D/E) 

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How to make a cultured pearl (E)

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Einige Gedanken zu Jadeit-Jade

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Jambolite (E)

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"Keshi" pearls (E)

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New rubies from Tanzania (E)

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Durability, damage and distress (E) 

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A Ruby deposit at Montepuez

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Innovation in bead-cultured pearls (E)

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Chrysoberyl: a gemstone with many faces (E)

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Flame structure of non-nacreous pearls (E)

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