Faux Diamond 2.75 Carat Wedding Engagement Ring

Silver Tone Metal Size 6 (cannot be resized or adjusted) No markings. Large center round solitaire is nearly 9mm, which is 2.75 carats! It is a little loose in the setting. It is accented by rectangle/emerald shaped gemstones around the whole band. Gorgeous sparkling set. I am unsure of the stones or metal, but know they are not diamonds. Band is 4.3mm wide.