Little Black Gun makes earing from shell casings. They go for about $25 and above, and there are other ornaments like hingecuff, bracelett or necklace
http://enreverie.com/collections/little-black-gun?page=1
Guns.com reviewed an earing
http://www.guns.com/review/gear-review-little-black-gun-earrings/
From: Guns.com