Tony White, crystal opal necklace, a double strand of crystal opal beads of green hue with an estimated 1.66ct trilliant cabochon crystal opal enhancer, bezel set in an 18ct yellow gold stepped frame and finished with an 18ct yellow gold tongue clasp featuring an estimated 0.98ct bezel set rectangular cushion cut emerald surrounded by a halo of fourteen milgrain set round brilliant cut diamonds, estimated total diamond weight 0.84ct, stamped 'White 18ct', 41 grams length 47 cm