Classic Round Mammoth CufflinksClassic round prehistoric woolly mammoth ivory and rhodium plated sterling silver cufflinks with bullet back closure. Prehistoric woolly mammoth ivory is found in the cold northern regions of Alaska, Canada, Russia, and Siberia. These fossil tusk materials may range in age from 10,000 to 200,000 years, and natural colors vary in shades of cream, tan, caramel, and brown. Mammoth ivory is the traditional 14th wedding anniversary gift. Designed by