fordite / detroit agate

Fordite, also known as Detroit agate, is old automobile paint which has hardened sufficiently to be cut and polished.^[1] It was formed from the build up of layers of enamel paint slag on tracks and skids on which cars were hand spray-painted (a now automated process), which have been baked numerous times.^[2] In recent times the material has been recycled as eco-friendly jewelry