Setting: 16 x 27 mm (0.6 x 1.1 in). Halo setting. Handcrafted in solid 9 carat white gold (4.60 gr). Natural octagon cut Siamese ruby (7.25 ctw) and diamond (0.2 ctw). The perfect Engagement Ring. July Birthstone gift. 40th Wedding Anniversary gemstone. Lifetime Warranty, Appraisal and Gift Box included.