Holly Yashi, Inc. is a jewelry designer and manufacturer located in the northern California town of Arcata, CA.
Founded in 1981, Holly Yashi produces handmade jewelry designed by Holly Hosterman, who has been recognized for her distinctive use of the precious and highly reactive metal niobium. Holly Yashi is also known for its technical innovations in working with niobium, such as the development of proprietary hand-coloration and image-embossing processes, as well as the employment of a powerful water jet which uses tiny fragments of crushed garnets to produce intricate filigree. Hosterman and Paul Lubitz founded Holly Yashi in their garage after graduating from Humboldt State University in 1981. Hosterman's designs have been sold by brands such as Anthropologie and featured in magazines such as Good Housekeeping. Her one-of-a-kind creations for the Swarovski company are now located in the Swarovski Museum in Austria.