1,700-Year-Old Ancient Gold and Onyx Ring Depicts Cupid, God of Love | Ancient Origins
Plaque d'Onyx et Nicolo – Promo Pierre Dure
Museum of Jewelry - Byzantine intaglio seal ring featuring a Nike and two leopards. Gold, niello, and nicolo onyx. 4th century AD. Walters Art Museum. | Facebook
Antique monogrammed onyx nicolo intaglio knight ring on pink gold | Galerie Pénélope
Chevaliere or jaune, intaille agate niccolo onyx – Bijouterie Janin
Onyx Value, Price, and Jewelry Information - International Gem Society
Ring with Engraved Nicolo — Institute for the Study of the Ancient World
Onyx intaglio hi-res stock photography and images - Alamy