Rating: A. Condition description: Traces of Use. This Cartier Solitaire necklace is a timeless piece of jewelry. The 18K yellow gold chain features a single round brilliant-cut diamond held securely in a delicate bezel setting. Its simple elegance makes it suitable for everyday wear or special occasions. 18K Yellow Gold Chain . Round Brilliant. Cut Diamond . Secure Bezel Setting . Lobster Clasp Closure . Elegant and Timeless Design.