Elongated Old Mine Cut Ring | Marquise Illuison Setting with Diamond Prongs | 18KTDesign Intent This design was created to bring together vintage character and modern precision. At the center sits an elongated old mine cut a stone known for its depth, movement, and unique facet pattern. Surrounding it, four marquise diamonds are set in a custom illusion layout, creating a wider visual spread while maintaining a clean, balanced silhouette. Finished with diamond encrusted prongs, every angle of this ring was designed to catch light