This is a Modernistic sterling silver and cubic zirconia ring. It is marked MEXICO, 925 and TC-80. The ring is a size 8-1/2. The widest portion of the ring measures 1/2 of an inch. It weighs 6.5 grams. The cubic zirconia is much brighter in person than it appears in my pictures. The ring is in very good condition but does have an age patina and may need cleaning or polishing. Please let me know if you have any questions. Thanks for stopping by.