Lot 489. Property from the estate of Mary, Duchess of Roxburghe. Natural pearl, Burmese ruby and diamond choker, early 20th century and later. Estimate 30,000 — 50,000 CHF (28,302 - 47,170 EUR). Lot sold 237,500 CHF. Photo Sotheby's.

Composed of four rows of natural pearls measuring from approximately 4.40 to 5.30mm, decorated with a floral motif set with a fancy-cut and circular-cut rubies, and single-cut diamonds, further accented with two geometric plaques set with circular-cut and baguette diamonds, length approximately 375mm.

Accompanied by SSEF report no. 79502, stating that the two hundred and forty-four pearls were found to be natural, saltwater, and that the ruby on the clasp is of Burmese origin, with no indications of heating.

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 12 mai 2015, 10:30 AM