Vintage Navajo Handmade by Leon Curley Sterling Silver & Turquoise Square Bead Squash Blossom Necklace & Post Earrings SetVintage Navajo Handmade Square Bead Necklace and earrings Set. Truly a unique work of art by the famous Navajo artist, Leon Curley. He is known for his unique square beads. The Naja showcases a diamond shape nugget cut Kingman stone. This necklace is unsigned but is stamped Sterling. I spoke with Leon Curley who authenticated this necklace and is indeed his one that he did not get signed back in the 1990s. Necklace: Naja 2. 5 x 2. 5 22. 5 length 12.