I made a hole in a glass prism to check the refractive index of light. Since it is rougher than general optical parts for teaching materials used in Indian schools, it may have scratches, chips, bubbles, etc. PUEBCO was born in Japan 2007 with the simple notion of creating things instinctively, using found and recycled materials to curate renewed lifestyle items. PUEBCO believes that just as people are the sum of their lived experiences, the objects we share our homes with should carry that same sense of history and weight. By using recycled materials and hand made processes, PUEBCO imbues these objects with the feel of many lifetimes and a sense of history that makes each piece unique. With PUEBCO products, there are no imperfections... they are details meant to be there by design. Area: India No.110240 Holder Size: H 1.4 in. x W 1.4 in. x D 1.6 in. Tray Size: H 0.2 in. x W 11 in. x D 2.5 in. Material: Brass, Glass