Platinum Black Opal and Diamond Pendant Necklace

Platinum Black Opal and Diamond Pendant Necklace

Article

1180774

Location

New York, United States

Closing at

October 22, 2025

Category

Necklace, Pendant

Brand

J.E. Caldwell & Co.

Year of Production

Circa 1920

Dimensions

Pendant Length: 47.5 mm, Width: 20.0 mm, Depth: 4.3 mm
Chain Length: 20.88 in

Material

Platinum

Gross Weight

25.49 g

Stone Weight

Diamonds 3.90 ct

Gemstone

Opal, Diamond

Gender

Women

Type

Chain

Description

J.E. Caldwell & Co. platinum pendant-brooch with chain necklace featuring one fancy-shaped black opal measuring approximately 47.5 × 20.0 × 4.3 mm, set with 36 transitional-cut and 8 French-cut diamonds weighing approximately 2.15 carats, and 21 old-mine cut diamonds weighing approximately 1.75 carats. Pendant signed J.E.C & Co., numbered 20287, circa 1920. Chain length 20 7/8 inches. Gross weight 25.49 g.

Provenance

From the Collection of an Orange County Philanthropic Family
Estimates: $40,000 – $60,000

Each Jewelry aggregates lot information for discovery and research. Bidding and purchases take place through the original auction source where available.

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