Pair of diamond ear studs, Graff. Photo Sotheby's. 

Each claw-set with a radiant-cut diamond of yellow tint weighing 1.50 and 1.58 carats, post and butterfly fittings, signed Graff, numbered, pouch by Graff. Estimation 9,000 — 14,000 CHF 

Sotheby's. Magnificent Jewels and Noble Jewels, Genève, 13 mai 2014 -http://www.sothebys.com/