RG0131CU VINTAGE JADE / CLEAR - HAND HAMMEREDDESCRIPTION RIGARDS 2022 Spring Summer Collection. Eyewear with round half frame. This item is made of carefully handmade hammered copper material and has an expert feel. There are 3 types of colors: a calm, muddy black paint (+ blue lens), a red rust (+ gradient red lens) and a blue rust (+ clear lens). The color of the rust treatment is adjusted by soaking it in special chemicals that are individually mixed for red and blue, and the soaking time is