23" in Length. Genuine Kingman Turquoise and Oxidized Sterling Silver Navajo Pearls Necklace NK38 55.3 Grams of Genuine Kingman Turquoise and Oxidized Sterling Silver Navajo Pearls. These are not cheap, light weight pearls. Chimney does not skimp on Silver or Turquoise. Pearls measure 10 mm, Kingman Turquoise Pieces vary in size. NM Native American Artist Chimney Butte Due to the dainty detail these pearls are not signed or stamped. These Pearls are Hand strung but not handmade. Handmade pearls are extremely detailed, time consuming and very expensive.