Antique 18K yellow gold and platinum Princess Diana–style ring featuring a vivid synthetic blue sapphire center stone weighing approximately 11.70 carats, framed by a diamond halo of 22 single-cut diamonds totaling approximately 0.65 carats (H color, VS2 clarity). This design is considered “Princess Diana style” due to its iconic combination of an oval blue sapphire centerpiece surrounded by a sparkling diamond halo, a look popularized by Princess Diana’s famed sapphire engagement ring. The ring measures approximately 1.0 inch in width, weighs 8.3 grams, and is a size 7 1/2. 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.