A vintage platinum engagement ring is centered with a sparkling 2.91 ct antique cushion cut diamond surrounded by Art Deco diamond-set frame.
The center diamond measures 8.75 x 8.70 x 5.65 mm, I color, SI2 clarity.
The frame is set with 12 brilliant and 24 single cut diamonds.
Estimated total diamond weight 3.60 ct.
Size 8 (18 mm) sizable