Organic engraving and delicate filigree covers the surface of this 18K yellow gold engagement ring mounting. This glittering wedding ring mounting will hold a .40 carat round stone and measures 9.05 mm in width. Size 6 3/4. We can re-size or reorder in other sizes. Also available in 14K yellow or white gold and platinum. Actual cost depends on the current market value of the precious metal used.