Vintage 9ct gold ring set with Peridot and Diamonds

Stunning 9ct Gold Vintage Ring with Peridot and Diamonds.  An asymmetrical design with diamonds set on both sides setting off the large Peridot.  Fully Hallmarked to the inner sides, both “375” conforming the Gold Quality, plus “DIA” indicating Diamonds are present, and other marks believed to indicate Birmingham, i.e., British origin. An outstanding ring of high quality. Dimensions approx.: ring size “K”  or “5 ¼”Band size thickness 1mm at rear to 2mm at divided shoulder, band width 1mm at rear to 4mm, before the divided shoulder. England.