Antique Deco 1.85 ct Diamond Ruby Onyx Platinum Engagement Ring. This extraordinary diamond engagement ring is beautifully handcrafted in solid platinum. This lovely ring is centered with 1 genuine round cut diamond approx. 1.25ct, I color, VS2 clarity and accented with some 6 genuine diamonds approx. 0.10 ct, G color, VS clarity, 20 genuine French cut rubies approx. 0.50 ct along with 24 genuine onyx.