Material:Crystal, Tanzanite Size:7 Only Brighton Halo Duo Ring - Ring : Tanzanite : Part of the Brighton Halo Collection . Make a lasting impression with sparkling gems and vintage-inspired accessories when you add the Brighton Halo Duo Ring. Accented with Swarovski crystals. Silver-tone finish. Imported. Measurements: Face Width : 2 11 in Face Length : 4 13 in Weight: 0.2 oz Product measurements were taken using size 7. Please note that measurements may vary by size.