Buy this Silk City Fibers Saphira Cone Yarn at Michaels.com. Established 1979 in the city once known as “the silk capital of America,” Silk City Fibers has served as pre-eminent supplier of yarns to top designers and discriminating consumers. Our commitment culminates in the on-hand availability of more than a thousand colors in over 50 yarn styles that can be purchased in any quantity with no fixed order increments or minimums, as well as countless others that can be custom-made or dyed.