This is a cross-cut round slab of professionally stabilized woolly mammoth ivory (Mammuthus primigenius). This piece can be cut into smaller slabs, drilled, sanded, polished etc. to achieve the desired results. The colour of the ivory is a mix of dark-blue and black.
Geological epoch: Pleistocene.
Age: Over 10,000 years.
Origin: Sakha Republic (Yakutia).