Recently, we were cleaning up some mounted turtles and turtle shells destined to go in the new Live Science Hall. All of these came from Amsterdam Schipol airport, where they had been confiscated by customs agents.
When taking a closer look at these animals we noticed that none of these specimens had the normal glass eyes used in taxidermy. Instead they were made of other materials less commonly used for mounting animals.
Quite a few of the turtles had eyes made from shells. Some appear to be cowrie, but we could not identify them all, and a few other shells were painted black making them impossible to identify.
Then we came across one turtle with a glass eyes made from a marble. Funnily enough, they used a “cat’s eye” marble and the coloured core actually made the eye look quite lifelike.