Art Deco Platinum Illusion-Set Old Mine-Cut Diamond Engagement Ring

An Art Deco illusion-set old mine-cut diamond ring with channel-set single-cut diamond shoulders, set in platinum. Circa 1920.

• Center diamond: 0.85 carat, M-N color, VS1-2 clarity
• Accent diamonds: 0.10 total carat weight, I-J color, VS1-2
• Size: 4 1/4