750/18K Yellow Gold Diamond Ring Solitaire Diamond Round Cut 0.15 ct Size 5.5

750/18K Yellow Gold Diamond Ring Solitaire Diamond Round Cut 0.15 ct Ring Size 5.5 Band width 3mm Purchased in the UK at a Frank Fagleman's jewelry store as a size 5.5 (but it had been previously resized since the stamp on the inside the band states "N" which equals to a US size 7). Also, inside the band there a stamp "750" which stands for 18K. Worn only once. In excellent condition. Very cute ring for a young or petite lady. Could suit as a gift for any occasion (graduation, birthday, Valentines Day, Engagement, Anniversary). Unfortunately, I have no information on clarity of the diamond.