Edwardian Platinum Engagement Ring (c. 1920s) with 1.20 ct GIA Old European Cut Diamond & Antique Accent Diamonds

This elegant platinum engagement ring is a genuine example of Edwardian/Art Deco jewelry from approximately 1920–1925, a period celebrated for its architectural design, refined platinum craftsmanship, and sophisticated geometric styling.

At the center is a GIA-certified natural Old European Cut diamond weighing 1.20 carats, graded H color and VS2 clarity. The diamond displays the broad flashes, high crown, and distinctive personality that make Old European Cuts so sought after by collectors and antique jewelry enthusiasts.

Along the shoulders, the ring features hand-finished foliate scrollwork and decorative engraving, reflecting the transitional Edwardian-to-Deco aesthetic that was especially popular in the early 1920s. The shoulders are accented with antique single-cut diamonds set in their original platinum mountings. These period-correct accent stones are an important authentication detail, as single cuts were the dominant melee diamond used in fine jewelry of the era.

Details

• Era: Edwardian/Art Deco (circa 1920–1925)
• Metal: Platinum
• Center Stone: GIA-certified natural Old European Cut diamond
• Center Diamond Weight: 1.20 carats
• Center Diamond Color: H
• Center Diamond Clarity: VS2
• Certification: GIA
• Accent Stones: Original antique single-cut diamonds
• Setting Style: Cathedral-style solitaire with ornate pierced openwork gallery
• Prongs: Multiple claw prongs
• Shoulders: Hand-engraved foliate scrollwork with original single-cut diamond accents
• Gallery: Open, pierced architectural gallery designed to maximize light performance
• Shank: Gracefully tapered platinum band
• Hallmark: CT PLAT
• Period Notes: The current 1.20 ct Old European Cut diamond is a later replacement that complements the original mount while preserving the ring's historical integrity.

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