These earrings feature faceted-cut, gem-quality iolite (3mm), with the base, posts, and catches all made of medical-grade stainless steel 316L. Due to the nature of natural stones, there may be variations in color intensity between individual pieces. We appreciate your understanding before making a purchase. *These earrings are available for immediate purchase. *316L is a type of stainless steel with extremely low allergenic properties. It is used in medical tools such as scalpels and scissors, as well as in body piercings. *If you would like a gift box, we can provide one for an additional 300 yen. Type... Single stone Motif material... Natural stone Base material... Surgical stainless steel