19 January

At a jewellery auction, the term ‘signed’ describes a designer piece, often from one of the big jewellery designers like Tiffany & Co., Cartier, Chopard, Boucheron, Van Cleef & Arpels – and they are just some of the names that regularly appear at O’Reilly’s auctions. Signed pieces are much sought-after, for a variety of reasons. Primarily, the brand behind the piece stands for quality – and so without the need for a written diamond report or even a chat with the auctioneer, a client can trust the quality of stones and craftsmanship in whatever piece they are looking at. The second big reason for demand is value. Many signed pieces are from collections still available in the shops – so making a price comparison (and establishing the good value had by buying that same piece at auction) is very easy. This month at O’Reilly’s, we have many such examples.


  • Lot 100: AN ART DECO EMERALD AND DIAMOND RING, by Raymond Yard, of openwork scroll design, set with a pear-shaped diamond, a circular-cut diamond and a square-cut emerald, enhanced by calibre-cut emerald and circular-cut diamond detail and diamond-set shoulders, to the plain hoop, circa 1940
    €14,000 – 18,000

(which was purchased by the current vendor in Christies in 1998)

  • Lot 62: A SAPPHIRE AND DIAMOND TURTLE BROOCH BY CARTIER, set throughout with sapphires of approx 1.20ct and diamonds of approx 0.56ct, mounted in 18ct yellow gold.
    €6,500 – 8,500
  • Lot 235: A PAIR OF DIAMOND AND GEM SET FLOWER BROOCHES BY VAN CLEEF ET ARPELS, one set at centre with one round ruby cabochon, other set at centre with one round emerald cabochon.
    €3,500 – 5,500
  • Lot 305: A PAIR OF TIFFANY & CO CAT BROOCHES, set with emerald and diamond, mounted in 18ct yellow and white gold.
    €3,000 – 5,000
  • Lot 99: A DIAMOND BOODLES RAINDANCE RING, of approx. 1.54ct in total, mounted in platinum, with appraisal from Boodles
    €3,500 – 5,500
  • Lot 312: A PAIR OF TIFFANY & CO SUNBURST DIAMOND DROP EARRINGS, with diamonds of approx. 0.60ct, mounted in 18ct white gold, with bag, box and papers
    €1,500 – 2,000

Many of the signed pieces come complete with original boxes and papers, and whether they come with originally packaging or not, the team at O’Reilly’s ensure the authenticity of each item before it is entered into the auction.


On View: Sunday 21st 12pm-4pm, Tuesday 23rd 11am-5pm and morning of sale 10am-12:30pm.

Catalogue online January 12th.