Antique Vintage 18 Carat Gold Silver Ring Set With Diamonds 19 Eme Century. The central cabochon is an imitation of turquoise. The black line is original. It is intended to imitate turquoise and is absolutely not cracked. The setting is silver. The rest in gold, solid hallmarked. The size of this ring is 56.5. FR. Weight 3.8 g Very good antique condition