By Navajo Artist Joann Silver: Sterling Silver & Turquoise Bolo Ties By Navajo Artist Joann Silver An authentic Native American Bolo Tie. The bolo tie is made of sterling silver, turquoise. The size is 1 1/2 x 2 Inch. Size and shape of center stone will vary a little. Hand-braided Vinyl cord (Looks like Leather) that measures about 38". with sterling silver tips. Comes with a certificate of Authenticity.