It is the most popular piercing with a simple but still presence. <Size> Glass part: Approx. Φ 9 mm <Material> Glass Pierce bracket: 14K gold filed (catch is resin) <What is K14gf ...> It is a gold layer crimped to a material (brass) with high heat and pressure, and when the weight of the gold layer is 1/20 or more of the total weight including the material, it is called <gf> gold filed (gold tension). Because it is made of a much thicker layer than gold plating, there is little to be peeled off even if it is used for a long time. Also different from plating, there is a sense of luxury in the color of the gold.