Lot 444. Citrine brooch, René Boivin, 1930s. Estimate 15,000 — 25,000 CHF. Lot Sold 40,000 CHF . Photo Sotheby's Set with step-cut and baguette citrines, French assay mark and maker's mark for René Boivin. Sotheby's. Magnificent Jewels and Noble Jewels,...

David Webb. A gem-set and diamond chimera bangle. The carved coral bangle embellished with brilliant-cut diamonds within black enamel surrounds, to two chimera heads each accented with a cabochon sapphire, centring on two jade beads, circa 1972, signed...