This piece was purchased in 1979, from I believe Art’s Jewelers. It was gently worn until the summer of 1980. It has since been stored away in a jewelry box. I took the ring to our local jeweler this morning and had it checked and cleaned. I do not know the diamond size, the diamond grading or the gram weight. A beautiful piece with the etching on the band. It is a round diamond set in a miracle head setting. It is a size 4, but can be sized up. Box included. **An amazing promise ring as well**