Fordite aka Detroit Agate Cabochon Fordite Red striped oval shaped Rosarita

Red striped oval shaped Rosarita cab

Measures approximately 23x7 mm

Measures approximately 20x20x6 mm

This cab measures approximately 26x9x6 mm

is old automotive paint which has hardened sufficiently to be cut and polished

Fordite aka Detroit Agate Cabochon Fordite Red striped oval shaped RosaritaFordite aka Detroit Agate Cabochon Fordite, also known as Detroit agate or Motor City agate, is old automotive paint which has hardened sufficiently to be cut and polished. It was formed from the buildup of layers of enamel paint slag on tracks and skids on which cars were hand spray painted, which have been baked numerous times. (from Wikipedia)