Cerulean glass

Cerulean glass is a type of glass that can only be found at Translucentica Heights.

Fiction

IDW Generation 1 comics

While performing an autopsy on the body of Senator Sherma, Prowl found powdered cerulean glass on his boots and treads, suggesting that he had been to Translucentica Heights just before his murder. Prowl and his partner Tumbler immediately followed this lead to the Heights. Post Hoc