1960s Rhombic Diamond Ring Set

An unusual 1960s engagement ring and wedding band set made by the Chicago jeweler Carteaux. The engagement ring's center stone is an exceptionally rare antique rhombic (or diamond-shaped) diamond that probably dates to the 19th century. The side diamonds also appear to be 19th century cuts, suggesting the ring was custom made using customer-supplied stones. The wedding band cleverly interlocks with the engagement ring. The engagement ring has an inscription that reads "L.J.S. Love A.B.C. 9-64." An EGL USA certificate for the center diamond is included stating F-G color and SI1 clarity.