Bonhams sale spotlights Cartier seed-pearl sautoir from Dame Nellie Melba

Bonhams’ June 11 Exceptional Jewels sale in London is headed by a Boucheron diamond bandeau tiara, but the pearl piece with the strongest afterlife is a Cartier Belle Époque seed-pearl and diamond sautoir from Dame Nellie Melba’s collection. In a market that increasingly rewards signed jewels with documented ownership, the necklace does more than decorate the catalog: it shows why antique pearls still command attention when design, rarity and celebrity provenance align.

The tiara sets the tone. Commissioned from Boucheron in London on 18 July 1924 and not seen publicly since, the Harcourt bandeau is estimated at £200,000 to £300,000, about $270,000 to $400,000. Mounted in platinum and set throughout with old brilliant, old single and rose-cut diamonds, it centers on a principal old brilliant-cut diamond weighing 3.60 carats, with remaining diamonds totaling approximately 85.00 carats. It is a serious historic jewel, but the pearl lot carries a different kind of magnetism.

Cartier’s sautoir, circa 1910, reflects the moment when pearl necklaces moved away from the soft drape of the Victorian strand and toward the round openwork disc pendants that emerged in the late 1900s. Here, seed pearl linking is punctuated by scroll and floral spacers millegrain-set with old brilliant, old single and rose-cut diamonds, while the clasp is signed Cartier Paris and the pendant and clasp are both numbered 2099. The piece is from the collection of Dame Nellie Melba, 1861 to 1931, and passed thence by descent.

That Melba connection matters. Bonhams describes her as Australia’s first international star, and her ownership gives the sautoir a cultural weight that lifts it above the category of merely attractive antique jewelry. The estimate of £60,000 to £80,000 looks measured against the Cartier signature, the documented descent and the freshness of the design, which still reads as modern in profile despite its Belle Époque date.

The sale also includes a rare Art Deco ruby and diamond swag necklace by Sterlé that converts to a bracelet and clip, reinforcing the auction’s focus on transformable, signed jewels with strong histories. But the Cartier sautoir is the piece that best explains the current pearl market: collectors want pearls that are not generic, but specific, documented and unmistakably designed for their moment.