Very fine emerald and diamond ring, Harry Winston

Set with a step-cut emerald weighing 21.34 carats, between triangular diamond shoulders, size 48, signed Winston, maker's marks for Jacques Timey.

"The described emerald exhibits a remarkable size and weight of 21.346 ct, combined with an attractive and homogeneous green colour and a fine purity... In addition to these qualities, this emerald shows no indications of clarity modification in fissures at the time of testing, which is a further sign of rarity".

Excerpt from the SSEF appendix letter