Among Bonner's pieces is an unusual amethyst and diamond bangle bracelet made by modernist French jeweler Suzanne Belperron.

FORBES: Magazine Article

At Christie's, a pair of Bulgari ruby-and-diamond pendant earrings are estimated at 290, 000 francs-480, 000 francs, and a charming enamel bangle by David Webb, designed as a zebra, at 10, 000 francs-15, 000 francs.

WSJ: Collecting: In Geneva, All That Glitters