This is a perfect pair of sterling silver screwback earrings. The main photo shows the 9mm stone size earrings. These round, basket set birthstone earrings are available in various stone sizes from 3mm-10mm. These studs features top quality AAA grade green peridot cz stones hand set in .925 sterling silver. The cubic zirconia stones are set in a strong basket setting, the basket setting is a huge upgrade over the prong setting. The earrings are fastened with secure screw backs. Peridot is the August birthstone. Great for everyday wear or save them for that special occasion. 4-SSE-PERRDBKSB.