Phillips to Auction Iconic Tiffany Brooch, High Jewelry Rarities This Month

By Annie Davidson Watson | June 05, 2025

For those chasing rarefied sparkle, Phillips will offer an array of signed pieces, colored gemstones, and notable diamonds in its highly anticipated New York Jewels auction on June 12.

At the center of the sale is a masterwork by Jean Schlumberger for Tiffany & Co.: a starfish brooch (pictured at top) crafted with tsavorites, sapphires, and diamonds—“a striking expression of Jean Schlumberger’s visionary design,” according to Cristina Rodrigo, head of sale for Phillips. The brooch arrives at auction in synchronicity with Tiffany’s 2025 Blue Book collection, Sea of Wonder, which draws directly from Schlumberger’s 1960s ocean-inspired designs.

The auction’s highest-value lots feature a 3.03 ct. fancy intense pink diamond (with an estimate of $1.2 million to $1.6 million) and a 13.36 ct. Colombian emerald (estimated at $300,000 to $500,000) that’s accompanied by five certifications including Muzo provenance.

emerald diamond ring — *Ring in platinum with 13.36 ct. step-cut Colombian emerald, and shield, pear-shape, and brilliant-cut diamonds, estimate $300,000–$500,000*

Van Cleef & Arpels signed jewels on the block include a diamond necklace from the maison’s high jewelry collection Folie des Prés and a diamond bangle in its textured Galuchat style, each with an estimate of $40,000–$60,000. Two emerald and diamond pieces attributed to Chaumet—a necklace and a pair of earclips—are also in the sale.

Van Cleef necklace — *Van Cleef & Arpels Folie des Prés necklace in 18k white gold with pear, marquise-shape, and brilliant-cut diamonds, estimate $40,000–$60,000*

The auction will include other top-tier signed pieces from heritage maisons, among them a sculptural garnet ring by Hemmerle, a 1930s Boivin rock crystal brooch, and a classic Trombino ring by Bulgari with a 14.03 ct. unheated sapphire of Ceylon origin.

*Hemmerle ring in bronze and 18k white gold with 11.79 ct. cushion-shape garnet, estimate $12,000–$18,000*

*Boivin brooch (circa 1930s) in platinum and 18k gold with rock crystal and circular and rose-cut diamonds, estimate $30,000–$40,000*

emerald ring — *Ring in 18k gold with 10.6 ct. step-cut emerald and tapered baguette diamond shoulders, estimate $90,000–$120,000*

New York Jewels’ preview exhibition runs June 8–11 at the Phillips galleries at 432 Park Ave. in Manhattan.

Top: Schlumberger for Tiffany & Co. brooch in platinum and 18k yellow gold with circular-cut sapphires, pear-shape and brilliant-cut diamonds, and 12.38 cts. t.w. pear-shape tsavorites, estimate $80,000–$120,000 (photos courtesy of Phillips)

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