Female Natural Mother-Of-Pearl Shell Ring $ 5.44 Product information: Material: titanium steel, shell Style: European and American Applicable gift-giving occasions: birthday Style: Women's Inlaid material: not inlaid Color: gold (pre-sale of ring 6) Ring number: No. 6 (inner diameter 16.5mm), No. 7 (inner diameter 17.2mm), and No. 8 (inner diameter 18.2mm) Ring surface width: 0.4cm Gram weight: 1.1g/piece.