Very pretty ring, I think vintage rather than antique, it has a grouping of 4 2.3mm diamonds at center of a recessed 'well' at center, flanked by smaller diamonds at each side. It is a USA size 7 to 7.5 and has a shank that can be easily resized by a jeweler's goldsmith. I think it would be lovely as an engagement or promise ring. Purchased in Germany with a grouping of antique fine jewelry, some custom. Acid tested and diamonds confirmed.
Very good to excellent condition throughout, prongs holding the diamonds firmly. Red box is only a prop and does not go with the jewelry items.