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The spinels were nearly free of any inclusions except for a few tiny colourless forsterite inclusions. In combination with trace element analyses, the origin of these spinels could be unambiguously attributed to the famous spinel mines near Kuh-i-Lal, located in the Pamir mountains in southern...

As in the past, the SSEF is regularly asked by the Swiss police authorities to act as a gemmological adviser in criminal cases. Usually, these are fraud cases, involving undeclared or mislabeled gemstones or their imitations. In a recent case with about 20 stones submitted...

René Lalique (1860-1945) was one of the most ingenious and creative designers of jewellery and glass objects at the end of the 19th and beginning of the 20th century. He significantly contributed to the Art Nouveau and Art Déco periods. ...

An antique-style bracelet with diamonds and pearls was recently submitted to SSEF for testing (Figure 1). Despite the complex setting, we were able to analyse all the pearls and found, that five of the pearls in this bracelet were in fact beaded cultured pearls (Akoya...