Fordite swell ring
This Swell ring in sterling silver with a Fordite face by Sebastian Cilento has a wonderful story.
Wikipedia states “Fordite, also known as Detroit agate or Motor Agate, is old automobile paint which has hardened sufficiently to be cut and polished. 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”
What this means, as cars are no longer painted this way, is that the material is extremely rare and will never be made again. That means each and every one of these rings is a unique, never to be repeated, piece of history and art.