Spritzer & Fuhrmann, late 1970s (Modernist, 1960–1970). Cocktail ring in high-polish 18K yellow gold, centered with 1 cushion-cut blue?green color-change tourmaline (9.41 x 7.56 x 5.38 mm) weighing 3.07 cts, accenter by 12 round brilliant diamonds totaling approx. 0.96 ct (F color, VS clarity) in flush four-prong settings; total gemstone weight approx. 4.03 cts. Weight 14 g (8.97 dwt). Ring size 7.75 (resizable). Top measures 21 x 16 mm (0.83 x 0.63 in) and rises 9 mm off the finger. Hallmarks: stamped with maker’s mark, retailer mark S+F, .750/18K, serial and signed “S+F 18KT 34.” 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.