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Koller offers a fine selection of coloured precious stones, diamonds, natural pearls and jewellery from all periods, mainly from private collections. Our four annual jewellery auctions offer a wide range of vintage and signed pieces at all price levels.

Some of the well-known makers which are always present in our auctions are Boucheron, Bulgari, Cartier, Harry Winston, JAR, Mauboussin, Tiffany & Co., Van Cleef & Arpels, and Webb.

Jewellery has always been considered desirable to own and wear as well as a solid investment, and this is true today more than ever. Our specialists examine and estimate your jewellery from a historical and aesthetic perspective, analyse its value on the current market, considering factors such as its provenance and collectability. Our long experience and intimate knowledge of the market are our guarantee of a professional evaluation of your jewellery as well as the successful handling of its sale. The numerous visitors to our previews in Zurich, Geneva and Germany, combined with our international network of collectors and professionals, assure worldwide interest and exceptional auction results.

Reto Schmidlin, Head of Department for Jewellery, is available to estimate single items or entire collections for our upcoming auctions.

Consignments are accepted until mid-January for our April auctions, late March for our June auctions, late June for our October sales, and late September for our December auctions.


Next Auctions


27 November 2024, consignments accepted until late September 2024.


Valuations / Consignments


If you wish to consign to one of our auctions, we will value your artworks free of charge. Please send us photos if possible, or call us. We will arrange an appointment to view your property at your home or in one of our offices in Zurich, Geneva, Florence, Munich or Düsseldorf. You will then receive our auction estimates so that you can make your decision.

Get an estimate now
How to sell at auction
Contact us
Contact your local representative


Valuation Events


Munich

8 & 9 February / 12 & 13 September

Frankfurt

16 February

Hamburg

22 February / 11 September

Lugano

2 February / 5 July

To make an appointment with our specialists, please contact the department or your local representative.



Representatives


Koller Geneva

Cyril Himmer
geneva@kollerauctions.com
+41 22 311 03 85

Koller Munich

Fiona Seidler
muenchen@kollerauctions.com
+49 89 22 802 766

Koller Düsseldorf

Ulrike Gruben
duesseldorf@kollerauctions.com
+49 211 30 14 36 38

Koller Italy

Lapo Bacarelli
italia@kollerauctions.com
+39 366 994 1836

Koller China

Jing Li
beijing@kollerauctions.com
+86 135 2039 8057

SELECTED RESULTS Jewellery


BURMA RUBY AND DIAMOND RING.

Platinum 950 and 800, 9g.
Set with 1 cushion-shaped ruby of 4.19 ct, Burma, unheated, flanked by 6 pear-shaped diamonds weighing ca. 2.00 ct. Size ca. 51.
BURMA RUBY AND DIAMOND RING.
BURMA RUBY AND DIAMOND RING.

CHF 187 500

LOT OF 9 LOOSE CEYLON/MADAGASCAR SAPPHIRES.

Lot of 9 loose sapphires. 1 cushion-shaped sapphire of 28.70 ct, Ceylon, unheated. 1 cushion-shaped sapphire of 10.79 ct, Ceylon/Madagascar, unheated. 1 oval sapphire of 9.78 ct, Ceylon, unheated. 1 oval sapphire of 7.52 ct, Ceylon, unheated. 1 oval sapphire of 6.06 ct, Ceylon, unheated. 1 oval sapphire of 5.68 ct, Ceylon, treatment unclear. 1 roundish sapphire of 5.56 ct, Ceylon, unheated. 1 cushion-shaped sapphire of 4.91 ct, Ceylon/Madagascar, unheated. 1 oval sapphire of 3.86 ct, Ceylon/Madagascar, unheated.
LOT OF 9 LOOSE CEYLON/MADAGASCAR SAPPHIRES.
LOT OF 9 LOOSE CEYLON/MADAGASCAR SAPPHIRES.

CHF 225 000

LOOSE FANCY INTENSE PURPLISH PINK DIAMOND.

Loose diamond of 1.21 ct, Cut-Cornered Square Modified Brilliant, Fancy Intense Purplish Pink.
LOOSE FANCY INTENSE PURPLISH PINK DIAMOND.
LOOSE FANCY INTENSE PURPLISH PINK DIAMOND.

CHF 118 750

LOOSE EMERALD.

Large oval emerald cabochon of 176.24 ct, Colombia, moderate, oil and resin, back part with one large chip. 39.75 x 34.56 x 18.49 mm.
LOOSE EMERALD.
LOOSE EMERALD.

CHF 218 750

PEARL AND DIAMOND NECKLACE, probably CARTIER, London, ca. 1920.

Clasp platinum 950 and white gold 750, 52g.
A strand of 31 graduated round, roundish and oval white to slightly cream-coloured saltwater natural pearls of ca. 7.8 - 11.5 mm Ø, spaced by faceted diamond-rondelles of ca. 5.3 - 7.2 mm Ø. The clasp set with 1 bouton-shaped dark grey saltwater natural pearl of ca. 14.2 mm Ø, 2 old pear-shaped diamonds weighing ca. 1.60 ct, 4 old marquise-cut diamonds totalling 0.80 ct and 10 old square-cut diamonds totalling ca. 1.80 ct. Engraved Cartier London. L ca. 41 cm.
PEARL AND DIAMOND NECKLACE, probably CARTIER, London, ca. 1920.
PEARL AND DIAMOND NECKLACE, probably CARTIER, London, ca. 1920.

CHF 400 000

EMERALD, SAPPHIRE AND DIAMOND SAUTOIR

White gold 750, 122g.
Of Art Déco-style, the links decorated with circular- and brilliant-cut diamonds resp. with carved emerald and sapphire leaves and emerald and sapphire rondelles, centred by a florally designed pendant, set with carved emerald- and sapphire leaves, emerald- and sapphire rondelles and brilliant-cut diamonds. Total weight of emeralds ca. 33.00 ct, of sapphires ca. 40.00 ct and of diamonds ca. 21.00 ct. L ca. 70 cm.
EMERALD, SAPPHIRE AND DIAMOND SAUTOIR
EMERALD, SAPPHIRE AND DIAMOND SAUTOIR

CHF 35 000

DIAMOND NECKLACE, probably ca. 1880.

Yellow gold and silver, 44g.
Set with 7 old-cut diamonds of ca. 2.60 ct, 2.40 ct, 2.20 ct, 2.10 ct, 1.80 ct, 1.80 ct, 1.50 ct, ca. H-I/VS2, I-J/SI2, F/I1, D-E/I1, K/SI2, no verbal short test, K-L/I1 and 46 additional old-cut diamonds totalling ca. 23.00 ct. The push button decorated with 1 rose-cut diamond. L ca. 41 cm.
DIAMOND NECKLACE, probably ca. 1880.
DIAMOND NECKLACE, probably ca. 1880.

CHF 106 250

BURMA RUBY AND DIAMOND RING.

Yellow gold 750, 12g.
Set with 1 large oval ruby of 8.58 ct, Burma, unheated, surrounded by pear-shaped diamonds weighing ca. 3.50 ct and pavé-set brilliant-cut diamonds totalling ca. 3.20 ct. Size ca. 52.
BURMA RUBY AND DIAMOND RING.
BURMA RUBY AND DIAMOND RING.

CHF 143 750

LOOSE KASHMIR-SAPPHIRE WITH SETTING, ca. 1970.

Platinum, total weight 10g.
Fine cushion-shaped sapphire of 6.92 ct, Kashmir, unheated. The ring setting set with 18 brilliant-cut diamonds totalling ca. 0.60 ct and 2 baguette-cut diamonds weighing ca. 0.10 ct. Size ca. 50.
LOOSE KASHMIR-SAPPHIRE WITH SETTING, ca. 1970.
LOOSE KASHMIR-SAPPHIRE WITH SETTING, ca. 1970.

CHF 118 750

TURQUOISE AND DIAMOND NECKLACE.

White gold 750, total weight 140g.
Set with round turquoise cabochons and brilliant-cut diamonds, enhanced by oval turquoise cabochons and diamond-set elements, decorated with 10 drop-shapbed turquoises in brilliant-cut diamond surround and 9 terminal drop-shaped turquoises with diamonds-set lugs. Total weight of turquoises ca. 228 ct resp. of diamonds ca. 23.00 ct. L ca. 40 cm.
TURQUOISE AND DIAMOND NECKLACE.
TURQUOISE AND DIAMOND NECKLACE.

CHF 37 500