Pair of conch pearl and diamond pendent earrings. Photo: Sotheby's

Each suspending on an oval conch pearl measuring approximately 7.84 x 11.03mm and 8.12 x 10.69mm respectively, surmounted by two conch pearls measuring approximately 4.02 x 4.80mm to 3.51 x 4.03mm, embellished by trilliant and circular-cut diamonds altogether weighing approximately 3.25 carats, mounted in 18 karat white gold. Estimate 220,000 — 260,000 HKD

Accompanied by six Japanese gem reports.