Antique Engagement Ring Art Deco 1.55 Round Brilliant Cut Diamond in PlatinumThis original antique art deco era engagement ring holds a 1. 55 carat round brilliant cut diamond set in a platinum solitaire mounting. The center diamond shimmers and sparkles and is the center piece of this lovely ring. Fully restored to its natural beauty, the band has beautifully detailed carving and a decorative basket which adds a touch of uniqueness to this one of a kind engagement ring.