Women's Tribal Collar Necklace. Exclusive Handcrafted Fair Trade Necklace Artisanally Made From Authentically Sourced Real Water Buffalo Horn. Tribal Collar Features Dramatic Polished Buffalo Horn Tusks Framing Intricately Carved Center Horn Panels on a Sleek Black Beaded Strand. Screw Bead Closure. Tusks Measure Approx 4.75 to 5.25 inches long. Center Measures Approx 2.75 x 4.75 inches. Note: Because this piece is crafted from genuine natural materials, natural variations in horn color, size, and shape will occur, making each piece uniquely one-of-a-kind. See images for some of the coloring variations.