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292^nd Auction: Watches »
24.10.2026 - In 30 days

294^th Auction: Jewellery »
October 17^th 2026 - In 23 days

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Auction on October 17^th 2026

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17.10.2026 16:30 - 18:30 o'clock
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Saturday, October the 10^th from 13-16 o'clock

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294^th Auction: Jewellery, Highlights

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Lady's wristwatches »

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Karl-Heinz Cortrie GmbH
Süderstrasse 282
20537 Hamburg

+49-40-219 06 52-0
mail@cortrie.de

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Highlights

294-5218 Wristwatch: extremely luxurious ladies’/men’s watch, platinum, Boucheron limited edition 6/26, original price 2008 “ON REQUEST” Ca. 31 x 45 mm, Reflet XL model in an exceptional version in solid platinum with luxurious diamond setting, automatic movement, diamond-set dial, date display, original Boucheron leather strap with diamond setting, unworn. This limited edition of just 26 pieces was not officially listed in the catalogue, but was available only on request. This special edition was created to mark Boucheron’s 150th anniversary. Estimated current production cost at Boucheron: €100,000–120,000. 20.000 € - 40.000 €

294-5231 Necklace: delicate gold snake chain with a very high-quality solitaire/brilliant-cut diamond pendant, ca. 3.5 ct Necklace approx. 45.5 cm long, ca. 13.7 g, 14K yellow gold, round cross-section, ca. Ø2.5 mm, solid pendant ca. Ø15 mm, so-called ‘freely hanging’ design, 18K gold, set with a valuable brilliant-cut diamond ca. Ø10 mm, ca. 5.9 mm high, ca. 3.5 ct, virtually colourless, in the I–J range, clarity in the VS–SI range, sensational brilliance, very high-quality and formerly expensive bespoke goldsmith’s piece. 15.000 € - 50.000 €

294-5220 A valuable, as good as new diamond ring featuring a 4.02 ct green-yellow fancy diamond and 2 white emerald-cut diamonds Ca. Ø17.5mm, RG54, ca. 5.3g, 18K white gold, centrally set with a 4.02ct fancy yellow diamond, clarity VS1, excellent and very good quality in polish and symmetry, no fluorescence; the weight of the fancy yellow diamond is engraved on the shank; also flanked by 2 beautiful emerald-cut diamonds totalling ca. 0.62ct; unworn. 14.000 € - 60.000 €

294-5219 Ring: extremely heavy brilliant-cut diamond solitaire ring, handcrafted by Ernst Loosli, Zurich, 3.3 ct K/VVS Approx. 17.5 mm in diameter, ring size 55, ca. 32 g, 18-carat white gold, high-quality brilliant-cut diamond, 3.3 ct K/VVS, handcrafted by Ernst Loosli, Zurich; current replacement value ca. €70,000. 13.000 € - 35.000 €

294-5259 Extremely valuable ‘NO HEAT’ tanzanite weighing 13.69 ct, colour: greenish violet, including IGI report Ca. 19.55 x 12.46 x 7.95 mm, 13.69 ct, natural zoisite/tanzanite, greenish violet, pear cut; the stone comes with a current IGI certificate dated 2026. Unheated tanzanites of this size and quality are rarely available on the market and have high potential for appreciation in value. 9.500 € - 15.000 €

294-5254 Valuable, exceptionally large aquamarine in a rare colour, 24.47 ct, including report Ca. 21.99 x 17.60 x 9.45 mm, 24.47 ct, natural aquamarine, octagonal step cut, blue, eye-clean; the stone is supplied with the corresponding GSI report dated 2026. The aquamarine has the sought-after intense blue colour, one grade below the ‘premier class’ Santa Maria in terms of colour grade. 9.000 € - 15.000 €

294-5265 Valuable untreated zoisite-tanzanite weighing 16.96 ct, including IGI report Ca. 15.80 x 12.13 x 9.25 mm, octaconal step cut, natural zoisite, a very valuable variety of tanzanite, colour: violetish blue, transparent, including GSI report dated 2026. 7.500 € - 15.000 €

294-5216 Ring: exclusive, as good as new platinum memoir ring with 16 very valuable diamonds in a rare Asscher cut, ca. 8.14 ct, unworn designer jewellery by Cirari Approx. Ø17.5mm, RG54, ca. 6.2g, platinum, ca. 4.5mm wide, beautifully handcrafted in the style of Graff, signed Cirari, set all the way round with a total of 16 very fine diamonds in the so-called Asscher cut, 16 half-carats of very fine quality, total diamond weight ca. 8.14ct, clarity predominantly in the VS range, colour in the Wesselton range, stone weight engraved on the shank, as good as new and unworn. 7.500 € - 30.000 €

294-5209 Bracelet: very high-quality, white gold vintage goldsmith’s bracelet in the shape of a belt, rare Approx. 22 cm long, ca. 59.1 g, 18K white gold, buckle ca. 24 mm wide, buckle and free-hanging loop set with brilliant-cut diamonds, totalling ca. 1.2 ct, top-quality, loop signed ‘Lotos’, exceptionally high-quality vintage goldsmith's work from around 1975, good condition. 7.000 € - 10.000 €

294-5193 Necklace: delicate antique centre-piece necklace with a very beautiful teardrop-shaped aquamarine of ca. 50ct Approx. 62 cm long, ca. 21.4 g, 14K white gold, fine anchor chain, centre piece ca. 62 x 23 mm, set with a very beautiful teardrop-shaped aquamarine of ca. 50 ct, eye-clean, facetted on both sides, also featuring diamonds and rose-cut diamonds, as well as two black diamond-shaped stones, presumed onyx, millegrain embellishments, delicate handcrafted work, rare antique jewellery, probably circa 1920. 6.000 € - 10.000 €

294-5229 Ring: One-of-a-kind, vintage goldsmith's ring with an impressive 10.2 ct emerald, IGI certificate Ca. Ø 17 mm, ring size 53, ca. 10.2 g, 18K yellow gold, solid goldsmith's work, natural emerald of very rare quality, transparent ‘Intense Green – Minor’, presumably from Colombia, rare triangle-sugarloaf cut, 10.2 ct, set on the shoulders with 2 very fine natural pear-cut diamonds, each approx. 0.36 ct, estimated original cost ca. 60,000 DM. Buyers with a delivery address outside the EU will not have to pay this tax, and the price will be reduced by 19%. 5.000 € - 15.000 €

294-5232 Earrings: high-quality solitaire brilliant-cut diamond stud earrings, fine brilliant-cut diamonds of ca. 1.6 ct each Ca. Ø10mm, ca. 5.8g, 18K yellow gold; the stoppers are as well set with very beautiful brilliant-cut diamonds, each ca. 1.6ct, colour in the H–I range, clarity in the VS range, solid goldsmith's work. 5.000 € - 25.000 €

294-5222 Necklace: exclusive, as good as new tanzanite and diamond necklace featuring a large 15.15 ct tanzanite in the rare ‘Intense’ grade, IGI report Approx. 46 cm long, ca. 10.9 g, 18K gold, pendant ca. 33 x 14 mm (including eyelet), set with a very beautiful tanzanite measuring ca. 18.95 x 14.18 x 7.93 mm, 15.15 ct, oval-cut, intense violet/blue, transparent, beautiful fire; also set with 7 diamonds totalling ca. 0.4 ct; the weight of the tanzanite on the pendant is hallmarked; all stones are natural; as good as new and unworn; intricate handcrafted work; the piece comes with a current IGI report from 2021. Buyers with a delivery address outside the EU will not have to pay this tax, and the price will be reduced by 19%. 4.000 € - 15.000 €

294-5223 Stud earrings: extremely luxurious tanzanite earrings, AAA tanzanites totalling 14.2 ct Approx. 16.5 x 15.5 mm, ca. 10 g, 18K white gold, heart-shaped, top-grade tanzanites, each over 7 ct, framed by very fine natural brilliant-cut diamonds totalling ca. 1 ct, top-class goldsmith's work, as good as new and unworn. Tanzanites of this quality are traded internationally at ca. US$1,000 per carat. The replacement value of these earrings is over €20,000. 4.000 € - 15.000 €

294-5188 Ring: vintage brilliant-cut diamond goldsmith's ring, ca. 2.6 ct, very beautiful brilliant-cut diamonds, central stone ca. 1.65 ct Ca. Ø18.5mm, RG59, ca. 6.6g, 14K white gold, featuring a central brilliant-cut diamond of ca. Ø7.65mm, ca. 1.65ct, plus one stone of ca. 0.5ct and another of ca. 0.45ct, colour in the Top Wesselton range, clarity in the VS range, original price ca. 50,000 DM 3.000 € - 15.000 €

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