1st: Set with a step-cut diamond, weighing 0.57 carat, mounted in platinum, 2nd: Of crossover design, set with brilliant-cut diamonds, the gallery pierced with star, crescent and heart motifs, 3rd, Set throughout with old brilliant-cut diamonds, 4th: The oval-cut synthetic sapphire within a surround of old brilliant-cut diamonds, remaining diamonds approx. 2.85cts total, 1st with partial UK hallmark, ring sizes: 1st H, 2nd M, 3rd N, 4th O (4)