Native American and Southwestern Jewelry

lot of 3, none are marked, includes:

a six-strand necklace strung with rolled turquoise, spaced with brown heishi
length 38 inches, drop length 17 inches, weight 54.2 dwt.

a twelve-strand necklace strung with white heishi and accented with rolled turquoise
length 18-1/4 inches, drop length 11-1/4 inches, weight 23.6 dwt.

lastly, a five-strand necklace strung with white heishi and turquoise
length 32 inches, weight 21.7 dwt.