Early 20th Century J.E. Caldwell Sapphire & 1.10ct Old European Cut Diamond Art Deco Platinum Ring, Size 5

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Antique Art Deco J.E. Caldwell Platinum Diamond & Sapphire Ring | Circa 1920s
An exceptional example of American Art Deco … Read more Antique Art Deco J.E. Caldwell Platinum Diamond & Sapphire Ring | Circa 1920s
An exceptional example of American Art Deco craftsmanship, this antique ring was created by the prestigious Philadelphia jeweler J.E. Caldwell & Co., one of the most respected luxury retailers of the early 20th century. The ring is signed “JEC Co.” inside the shank, confirming its Caldwell origin.
Crafted in solid platinum, the design features exquisite hand-engraved filigree detailing throughout, reflecting the refined artistry and precision of the Art Deco era.
At its center, an elegant vertical arrangement showcases two magnificent gemstones set within ornate octagonal frames.
Surrounding the central composition are old mine cut diamonds. All stones are meticulously secured in classic prong settings, emphasizing both beauty and structural integrity.
The harmonious blend of diamonds, sapphire, and intricate metalwork makes this ring a rare and highly collectible example of Caldwell’s legacy.
Details:
Maker: J.E. Caldwell & Co. (Marked “JEC Co.”)
Era: Art Deco, circa 1920s
Metal: Platinum
Center Diamond: Old European cut, ~1.10 CT, J color, VS1 clarity
Sapphire: ~1.00 CT, deep blue-green
Accent Diamonds: 16 old mine cut, ~0.50 CTW
Setting: Ornate octagonal frame, vertical layout
Ring Size: 5
Weight: 4.7 grams
Engraving: Hand-engraved filigree throughout See less