Lot 121

A Belle Époque Pearl, Diamond and Platinum Brooch/Pendant

The large oval form with delicate floral and foliate motifs, with two pearls measuring 5.7 mm, and collet-set old European-cut diamonds and old single-cut diamonds weighing approximately 3.90 carats, pearls not tested for natural origin, in platinum

Estimate: $2,600-$3,600

Lot 386

An Art Deco Diamond and Platinum Brooch

The rectangular slightly bombé geometric form centering a bezel-set round diamond weighing approximately 1.60 carats, the frame and diagonal and arched lines of smaller round diamonds totalling approximately 8.00 carats, in platinum

Estimate: $5,000-$7,000

Lot 120

An Antique Pearl, Diamond and Gold Necklace

Fashioned with delicate twin rows of mesh linking, and decorated by a series of pearl stations suspending articulated elongated pampille fringe terminals comprised of floret-set pearls and old mine-cut diamonds, pearls not tested for natural origin, in 18k gold, length 16 1/2 inches

Estimate: $4,000-$6,000

Lot 385

An Exquisite Art Deco Diamond and Platinum Bracelet, by Cartier

The wide flexible strap featuring geometric motifs of trefoil scallops and chevrons and with linear borders set with round diamonds, with a central row of square diamonds, joined to a pair of pavé-set diamond rectangular bombé links accented by twin arched connections of channel-set baguette-cut diamonds, the diamonds altogether weighing approximately 11.00 carats, in platinum, length 7 3/8 inches

Estimate: $50,000-$70,000

Lot 371

A Pair of Fine Antique Ruby, Diamond and Gold Ear Pendants

Suspending a pair of cushion-shaped rubies weighing approximately 3.75 carats, the frames and surmounts set with old European and old mine-cut diamonds weighing approximately 4.00 carats, in 14k gold

Estimate: $12,000-$16,000

Lot 372

A Fine Antique Ruby, Diamond, Silver and Gold Ring

Centering a cushion-shaped ruby weighing approximately 2.70 carats, framed by old European-cut diamonds weighing approximately 3.95 carats, in silver and 18k gold

Estimate: $6,000-$8,000

Lot 399

A Fine Antique Sapphire, Diamond, Platinum and Gold Necklace

Featuring four cushion-shaped sapphires weighing approximately 16.65 carats, the delicate swag garlands and knife-edge motifs accented by old-cut diamond buds and foliate decorations, joined to a fine link chain, in platinum and 14k gold, length 17 1/2 inches

Estimate: $12,000-$15,000

Lot 398

An Art Deco, Sapphire, Diamond and Platinum Bracelet

The strap featuring three square panels set with quartets of French-cut diamonds, accented by a slender line of rectangular sapphires amid borders of old European-cut diamonds, the diamonds altogether weighing approximately 9.30 carats, in platinum, length 7 1/8 inches

Estimate: $13,000-$15,000

Lot 397

A Retro Citrine, Diamond, Platinum and Gold Bracelet

The broad flexible strap of stylised buckle and bow motif, composed of polished lozenge-shaped links, centering an emerald-cut citrine weighing approximately 50.00 carats, amid arched tapering sashes with round diamond trim, in platinum and 18k gold, length 6 1/2 inches

Estimate: $7,500-$8,500

Lot 366

An Antique Ruby, Diamond, Platinum and Gold Brooch

The broad form modelled as a tiara, with an openwork floral and ribbon design featuring an oval ruby weighing approximately 1.35 carats, accented throughout with old European-cut diamonds weighing approximately 4.50 carats, in platinum and 18k gold

Estimate: $5,000-$7,000

Lot 344

A Retro Ruby, Diamond and Gold Bracelet

The wide heavy strap composed of fluted shell and polished hexagonal links, amid oval borders, and sprinkled with small round rubies, the fluted bow clasp decorated with an arched ruby channel and round diamonds, suspending a fluted cap tassel with long multi-strand mesh chains and round ruby terminals, adjustable in length

Estimate: $6,000-$9,000

Lot 367

An Antique Pair of Ruby, Diamond and Platinum Ear Pendants

The delicate ear pendants suspending two pear-shaped rubies weighing approximately 1.50 carats, from elongated lines and florets set with old European and old single-cut diamonds, in platinum

Estimate: $4,000-$5,000