The newest jewelry collection from Reinstein/Ross Goldsmiths features multicolored cuff links, earrings, and pendants that celebrate American ingenuity and originality. The jewelry’s “gems” are hewn from Fordite, a stone-like material with a fascinating backstory: Prior to the invention of electrostatic painting in the 1970s, cars were hand-sprayed, which meant that large amounts of paint deposited on the walls, pipes, and floors of the paint bays then hardened as the cars were baked at extremely high temperat…