More Details Joseph Williams Candy Rock Napkin Ring Details Handcrafted napkin rings sold individually. Made of natural stones. Available in Purple (amethyst), Pink (rose quartz), Green (calcite), Graphite (tumbled pyrite), or White/Clear (rock crystal). Due to the nature of natural stone, colors will vary. Sizes will vary; mounted on a 1.5"Dia. wire ring. Made in the USA.