An 18 Karat White Gold, Onyx, Diamond and Tourmalinated Quartz Bead Necklace, consisting of 23 quartz beads with black schorl tourmaline needle inclusions measuring approximately 17.98-18.03 mm in diameter, strung alternating with 12 onyx beads measuring approximately 6.25 mm in diameter and white gold rondelles containing three round brilliant cut diamonds weighing approximately 0.61 carat total and numerous round single cut diamonds weighing approximately 1.76 carats total, joined with a hook and toggle clasp.Stamp: 750.