An emerald and diamond ring. photo Bonhams centering a rectangular-cut emerald with triangular-cut diamond shoulders and a plain mount; emerald weighing approximately: 4.50 carats; estimated total diamond weight: 1.60 carats; mounted in platinum; size...

Pair of emerald and pink sapphire earclips, Michele della Valle The 2 oval cabochon emeralds weighing approximately 88.00 carats, framed by numerous pavé-set round pink sapphires weighing approximately 11.30 carats, mounted in 18 karat pink gold, with...

Emerald and pink sapphire ring, Michele della Valle Set with an oval cabochon emerald weighing approximately 44.65 carats, framed by numerous pavé-set round pink sapphires weighing approximately 18.30 carats, mounted in 18 karat pink gold, size 6½, maker's...