ring blank for 6x7mm/7x9mm/9x11mm/10x12mm/12x16mm/13x18mm oval cabochons white gold plated 925 silver adjustable band ring base jz006 hanhe-great bead priced per 1 blank ring base. you can select a blank size. <br> material: white gold plated 925 sterling silver<br> weight: 6x7mm - about 2.1g, 7x9mm - about 2.2g, 8x10mm - about 2.2g, 9x11mm - about 2.2g, 9x13mm - about 2.4g, 10x12mm - about 2.4g, 10x13mm - about 2.6g, 10x14mm - about 2.6g, 11x15mm - about 2.6g, 12x16mm - about 2.7g, 13x18mm - about 2.9g <br> ring band size: adjustable