The step-cut fancy brown-yellow diamond weighing 25.78 carats, between tapered baguette diamond shoulders, size 49, maker's mark for Gübelin.

Accompanied by GIA report no. 6197021367, stating that the diamond is Fancy Brown-Yellow, Natural Colour, VVS1 Clarity.

Sotheby's. Magnificent Jewels and Noble Jewels, Geneva, 15 May 2018, 10:30 AM