Necklace set in 18k white gold with a main mixed heart-cut emerald, claw-set, weighing 11.50 ct. And a central round cut diamond set in chaton on the necklace. Estimated weight 0.70 ct, estimated purity grade VS and estimated colour grade G-H.On the pendant are thirty-eight round brilliant-cut diamonds, bead-set, with an estimated total weight of 0.48 ct. Estimated purity grade SI. Estimated colour grade I-J. Thirteen gallery-set baguette-cut diamonds with an estimated total weight of 1.85 ct. Estimated purity grade VS and estimated colour grade G-H. Six marquises or princess-cut brilliant-cut diamonds set in chaton with an approximate weight of 1.60 ct. Estimated purity grade: VVS 2-VS 1. Estimated colour grade: G-H.In addition, the necklace is set with six hundred and forty-eight round brilliant-cut, bead-set diamonds with an estimated total weight of 10.36 ct. Estimated purity grade: SI. Estimated colour grade: I-J. And forty-two baguette or trapezoid baguette-cut diamonds, gallery-set. Estimated total weight: 3.25 ct. Estimated purity grade: VS. Estimated colour grade: G - H.Box clasp with tongue and safety clip.Attached, GEMA CYT REPORT - Gemmological laboratory, carried out on 4 September 2013.Piece weight: 114 g; Total carat weight: 30.24 ct.