4.5mm long x 4mm wide Main stone, claw pronged setting, 2.5mm round cut; Surrounding stones, 3x 1mm round cut gemstones Available in Solid 14k Yellow, Rose and White Gold Gemstones available as listed. Stainless steel pin compatible with 16g and 18g post/backing. Sold as single Post/backing not included We recommend installation by a professional piercer.