"Metallic threads" refers to thin strands of metallic material, like gold or silver, that are used in sewing or embroidery to add a shiny or sparkly effect to fabric or artwork. Full definition
It is woven with metallic threads that give it an unbeatable golden sheen and ensure superior shape retention. (tissura.com)
The sheer beige ground is outlined in fine golden cord and embroidered with golden and silver metallic threads in a riveting floral pattern. (tissura.com)
Shades of yellow, purple and muted green with gold metallic thread woven throughout. (1stdibs.com)