Warning: Content may contain harsh material. Reader discretion is advised.

We begin with the story of a man who bends and shapes sheet metal with his bare hands.

Years ago, modern furniture designer Hugh Acton began crushing metal with his tractor to create sculpture. Since then, his art has evolved into what we share with you today: Crushes, a grunge-chic jewelry collection of cuffs and rings.

The seven badass pieces are unlike anything we’ve ever seen. Take the undeniably stunning three-inch sterling cuff with hints of tarnish (also available in copper) and the matching ring. Or the real showstopper: an oxidized copper mesh cuff. Somehow, it gives a tie-dyed illusion.

Please do not try this at home.

Available at Swallowtail, 2217 Polk Street, at Vallejo Street (415-567-1555 or swallowtailsf.com).