The ring is marked 18k and is solid white gold with yellow gold trim to one side. It also has the makers mark, "AR". The center round brilliand cut Natural Diamond measures 3.2 mm in diameter and has an approx weight of .12 cts. It is VS QUALITY and H in color. The diamond is surrounded by 5 bright blue round natural sapphires with an approx total weight of 1.00 cts. The bottom of the shank is 3.0 mm . It wears to a size 6.5 and can be resized.