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17 Preview of the Jewellery auctions on 17 June and 2 July 2020 Turquoise – popular all over the world The intensely coloured phosphate mineral not only gave its name to the colour turquoise, it was also used very early on and in various culturesworldwide in themanufacture of jewellery – in ancient Egypt aswell as by theAztecs, the Persians and in ancient China. The exotic gemstone was transported via the Silk Road, themost important his- torical trade route between Asia and Europe. This sporty and elegant bracelet (ill. 1) is set with numerous oval and pear-shaped turquoises totalling approximately 65 carats, decorated w ith diamonds and diamond-set leaf motifs. 2 1 Turquoise and diamond bracelet. Yellow and white gold 585, L ca. 17.5 cm. Estimate: CHF 6 500/8 500 Auction 17 June 2020 2 Natural pearl and diamond pendant. Circa 1920. L ca. 3.7 cm. Estimate: CHF 20 000/30 000 Auction 2 July 2020 3 Diamond, pearl and mother-of-pearl earclips. L ca. 3.3 cm. Estimate: CHF 1 400/2 000 Auction 2 July 2020 4 Diamond, pearl and mother-of-pearl brooch. L ca. 5.6 cm. Estimate: CHF 1 200/1 800 Auction 2 July 2020 5 Emerald and diamond ring. Circa 1925. Estimate: CHF 23 000/33 000 Auction 2 July 2020 6 Emerald and diamond bracelet by Gattle. Circa 1925. L ca. 16.5 cm. Estimate: CHF 18 000/28 000 Auction 2 July 2020 3 4 5 FOR FURTHER INFORMATION JEWELLERY Carla Suessli suessli@kollerauctions.com ONLINE CATALOGUES www.kollerauctions.com 6