This is a stunning geometric cocktail ring, created by the Brazilian jewelry house of H. Stern, back in the 1990. This beautiful contemporary ring is part of the Power-Collection, specially designed by Diane Von Furstenberg for the company. The statement ring has been crafted with a massive sculptural look in solid yellow gold of 18 karats with high polished finish and embellished on top with a superb faceted rock quartz of about 54.0 carats. Weight: 30.98 Grams, (19.85 Dwt). Size: 7 and may be sized up or down on special request. Measurements: 32 mm by 21 mm (1.26 x 0.83 Inches) and raise 18 mm over the finger. Hallmarks: Stamped with the maker's mark, the mark associated to Diane Von Furstenberg, the mark for the assay and warranty of the 18kt gold and signed as follows, "S. .750 M". Very good conditions. All our diamonds and colored gemstones are naturally earth-mined. Any synthetic (lab-grown) stones will be clearly indicated in the description. Upon Request, Auction House may provide Ring resizing or/and appraisal. This will carry an additional cost. Appraisals are made by our in house GIA certified Gemologist.