I created this using two different materials; red acrylic and antique bronze plated stainless steel. The keyhole shape goes through the pendant and there is a hole for a thin chain that goes all the way through the acrylic part. This is not available to buy from Shapeways only from me here, or possibly later, on Etsy. It is quite large but not overly heavy. I’m selling this unique pendant for $60 (CDN and US $)including shipping. If you have any questions please contact me.