This unisex 21inch necklace is made of reconstituted turquoise heshi beads and sterling silver rondell beads. The exact meaning of the word heishi (hee shee) is “shell necklace.” It comes from the Keres language, spoken by the Native Americans living in Kewa, (Santa Domingo Pueblo in New Mexico). The emergence of heishi as an art form was first recorded in 6000 B.C. It is safe to say that this must be the oldest form of jewelry in New Mexico, and perhaps in North America. Currently there are very few skilled artisans producing heishi beads using the ancient methods. Today's heshi beads are disk shaped, polished tubes of organic materials including shells, but also of other like turquoise, lapis, coral, and silver, made in affordable methods to imitate the style of beads produced by ancient Pueblo North Americans. The turquoise beads on this necklace are approximately 4mm x 5.5mm and the sterling silver rondell beads are approximately 2.5mm x 5.5mm. The infinity style lobster clasp closure is sterling silver.