18kt Gold Antique Chain Necklace with Moonstone Antique 18kt gold Chain Necklace. It features a Slider to regulate the length of the Necklace. Accented with a cabochon Moonstone. Total weight: 34.6 grams. Very good conditions. Upon Request, Auction House may provide an appraisal. This will carry an additional cost. Appraisals are made by our in house GIA certified Gemologist.