4mm Mammoth Ivory Round Bead NecklaceOur classic prehistoric woolly mammoth ivory 4mm round bead necklace is finished with a mammoth ivory clasp and may feature natural tones of cream, tan, and or brown. Each piece is unique due to the natural coloration of our fossil tusk materials. Listing is for one single strand necklace. Prehistoric woolly mammoth ivory is found by chance in the cold northern regions of Alaska, Canada, Russia, and Siberia. Fossil tusks may range in age from 10,000