Fred Leighton emerald and diamond ring, of cluster design, centring a claw-set oval-shaped emerald weighing approximately 8.65 carats, framed by a halo of brilliant-cut diamonds, the edge, gallery and under rail pave-set with brilliant-cut diamonds, the hoop continuously set with diamonds, the diamonds together weighing approximately 0.66 carats, mounted in platinum, size L, signed F.Leighton for Fred Leighton.