These shiny rainbow skulls are made from Pyrex glass which is a very smooth and strong material. Coated in a metallic iridescent finish. Many people consider glass as being the ultimate material for jewellery in stretched lobes. Glass is perfectly smooth and strong (don't worry about these smashing in your lobes). These come in a perfectly smooth double flare saddle fit. Extremely accurate gauge size. Every piece of jewellery is completely unique and handmade. We'll match up pairs as best as possible.