Jewelry Department

Jewels of Distinction

From signed estate pieces to important gemstones, Sphere Auction's jewelry specialists bring unrivalled expertise to every lot — with provenance research and gemological rigor that collectors trust.

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Selected Lots — Fine Jewelry & Timepieces

Important Jewelry & Watches·December 12, 2026

Lot 42

Platinum & Diamond Solitaire Ring

A magnificent round brilliant-cut diamond of approximately 4.2 carats, D colour, VVS1 clarity, set in a classic platinum mount. Accompanied by GIA certificate.

$85,000 – $120,000

Lot 67

Art Deco Sapphire & Diamond Brooch

An exceptional Art Deco brooch set with a cushion-cut Ceylon sapphire of approximately 8.5 carats, surrounded by old European-cut diamonds in a platinum millegrain mount, circa 1925.

$45,000 – $65,000

Lot 88

Colombian Emerald & Diamond Pendant

A fine Colombian emerald of approximately 6.1 carats displaying exceptional colour and transparency, suspended from a diamond-set platinum chain. AGL certificate confirming Colombian origin.

$60,000 – $90,000

Lot 103

Natural Pearl & Diamond Necklace

A superb natural pearl necklace comprising forty-seven graduated pearls of exceptional lustre, completed by a diamond-set clasp in white gold. Natural pearl origin confirmed by SSEF.

$28,000 – $40,000

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Our jewelry specialists have handled some of the most important private collections to come to market in recent decades. We offer discreet valuations, comprehensive provenance research, and access to a global network of serious collectors.

94%

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40+

Years of expertise

12,000+

Collectors worldwide

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