These earrings feature a faceted cut pink topaz (3mm) of gem quality. The posts and catches are made of medical-grade stainless steel 316L. Post size: Approximately 12mm / Post thickness: Approximately 0.7mm *These earrings are available for immediate purchase. *316L is a stainless steel material with extremely low allergenicity. It is also used in medical tools such as scalpels and scissors, as well as body piercings. *If you would like a gift box, we can provide one for an additional 300 yen. You can choose the color of the ribbon. Type...Single stone Base material...Surgical stainless steel Motif material...Natural stone