Sterling silver and fordite ring in a size 7.
"Fordite, also known as Motor Agate, is a unique automtive enamel material with an interesting history. The original layered automotive paint slag “rough” was made incidentally, years ago, by the now extinct practice of hand spray-painting multiples of production cars in big automotive factories.
The oversprayed paint in the painting bays gradually built up on the tracks and skids that the car frames were painted on. Over time, many colorful layers built up there. These layers were hardened repeatedly in the ovens that the car bodies went into to cure the paint. Some of these deeper layers were even baked 100 times.
Eventually, the paint build-up would become obstructing, or too thick and heavy, and had to be removed. As the story goes, some crafty workers with an eye for beauty realized that this unique byproduct was worth salvaging. It was super-cured, patterned like psychedelic agate, and could be cut and polished with relative ease!"