Bone Clones, which began in 1993 has always been committed to the accuracy and quality of its replicas.  Initially many wondered whether replica skulls and skeletons would be accepted.  So the challenge was to make replicas that were both durable and virtually indistinguishable from the originals. These fine replicas are cast in polyurethane resin.  The final step of colouring the piece is done by expertly trained painters.