Adjustable Black String Necklace w/ Abalone Shark Tooth For Men Women Each is Meticulously Handcrafted Approx: Necklace Length: 16" to 30" Tooth Pendant Size: 40mm High Quality Organic Necklace. Natural Bone Tooth Pendant Search for "Jewelry Volt Necklaces Chokers" for more necklaces and chokers from Jewelry Volt.