Lot 322. Jacob & Co. An Impressive Jadeite Bead and Diamond Necklace. Estimate Upon Request. © Sotheby's 2022

Set with thirty-five slightly graduated jadeite beads of highly translucent green colour, completed by a baguette and brilliant-cut diamond-set clasp, mounted in 18 karat white gold, length approximately 535mm, signed Jacob & Co., case stamped Jacob & Co.

Jadeite beads approximately 16.50 to 12.70mm.

Accompanied by Hong Kong Jade & Stone Laboratory certificate no. KJ 104173(1-3), dated 15 June 2022, stating that the jadeite tested are natural, known in the trade as "A Jade". Further accompanied by Gübelin report.

Also accompanied by Jacob & Co. Certificate of Authenticity.

Lot 304. An Exceptional Jadeite, Ruby and Diamond Pendent Necklace. Estimate 8,000,000 - 16,000,000 HKD. © Sotheby's 2022

Set with an oval jadeite cabochon weighing 72.30 carats, of bright green colour and very good translucency, to the ruby surmount embellished with oval diamonds, suspending from a detachable diamond necklace set with brilliant-cut diamonds, mounted in 18 karat white gold, length approximately 413mm.

Jadeite cabochon approximately 29.27 x 22.95 x 12.74mm.

Set with an oval jadeite cabochon weighing 31.22 carats, of vivid emerald green colour and very good translucency, the gallery decorated with brilliant-cut diamonds, mounted in 18 karat white gold, size 6½.

Jadeite cabochon approximately 22.27 x 17.60 x 10.39mm.

Accompanied by SSEF report and appendix letter no. 123207, dated 13 June 2022, stating that the jadeite is with no indications of treatment and the colour may also be called 'imperial green' in the trade. The appendix letter further stating that "The homogeneous and vivid green colour......poetically also referred to as 'imperial green' in the trade......A natural jadeite-jade of this size and quality can be considered very rare and exceptional."

Sotheby's. Important Jewels, Hong Kong, 19 July 2022