Mammoth Ivory Bear Post EarringsOur fossil mammoth ivory Bear post earrings feature a pair of flat traditional bears set with rhodium plated sterling silver posts and clutches. 1 2 X 5 8 Prehistoric woolly mammoth tusks are found in Siberia, Russia, Alaska, and Canada, and may range in age from 10,000 to 200,000 years old. Natural colors vary in tones of cream, tan, caramel, and or brown.