Hand sculpted glass bangle with an asymmetrical curve. Wear alone or pair with multiple bangles for added detail. Material We work with a local glass blower in Brooklyn to make this bangle. The material is borosilicate glass, which laboratories and restaurants use because it is much sturdier than standard, everyday glass due to the boron trioxide content that makes it less volatile. Measurements 2.3 / 6cm inside diameter Material Borosilicate glass, which has a boron trioxide content that makes it less volatile. Scallop Bangle - Clear