C. 1960. If you're drawn to an approachable, down-to-earth engagement ring, this one is a beautiful choice. From our Estate collection, the … C. 1960. If you're drawn to an approachable, down-to-earth engagement ring, this one is a beautiful choice. From our Estate collection, the low-profile design sparkles with a single .25 carat round Old European-cut diamond in a scalloped setting of polished 14kt yellow gold that evokes the look of sculpted flower petals. 1/4" wide. Diamond ring. Exclusive, one-of-a-kind Estate Jewelry.