Marlene Stowe. An Important Peridot and Diamond Ring. Photo Philips de Pury & Company

Set with a cushion-cut peridot, weighing approximately 25.50 carats, flanked on either side by an emerald-cut peridot, accented with marquise-cut diamond borders, mounted in 18K yellow gold, size 6.  Signed 'M Stowe'. ESTIMATE $14,000-18,000. Unsold

Philips de Pury & Company. Jewels. New York. 6 december 2011