M.S. Rau is committed to offering fine art of the highest caliber and we seek paintings and sculpture by historically renowned artists, often with impressive provenance. The large majority of our works of art come from private. . .
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J.E. Caldwell Yogo Sapphire Swan Brooch, 14.50 Carats
- This elegant swan brooch shines with 14.50 carats of untreated Yogo sapphires
- The masterpiece is from J.E. Caldwell, one of the country’s oldest fine jewelers
- Yogo sapphires are considered the finest precious gemstones ever found in America
- Set in 18K yellow gold
- Get complete item description here
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Yogo sapphires are mined exclusively from Yogo Gulch in Montana and are celebrated for their naturally rich color and exceptional clarity. Discovered in the 1880s, these rare American gems were famously described by Tiffany & Co. gemologist George Kunz as “the finest precious gemstones ever found in America.” Unlike most sapphires, Yogo stones are typically left untreated, as heating diminishes their intensity, making natural examples especially prized.
Venerable American jeweler J.E. Caldwell & Co., founded in 1839 in Philadelphia, is renowned for its Art Nouveau and Deco jewels. One of the country’s oldest fine jewelers, the firm supplied wealthy Philadelphians with European-style jewelry, silver and objets d’art, and its store was celebrated for its opulent design.
Circa 1920
1 7/8" length
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Buy With Confidence
For over a century, we've placed important art, rare jewels and exceptional objects with more than 14,000 collectors worldwide, and have been recognized by trusted publications including Robb Report, The New York Times, Wall Street Journal and more.

On Approval
Examine select works in person before you commit

125% Guarantee
Full credit plus 5% annual appreciation for five years

Trusted Expertise
Over two centuries of combined experience across our specialists
