This is a cross-cut, stabilised woolly mammoth molar piece (Mammuthus primigenius). This square block can be precision-cut, drilled, sanded, polished etc. to achieve the desired results. Consistent width and thickness. The colour of the molar is grey.
Geological epoch: Pleistocene.
Age: Over 10,000 years.
Origin: Sakha Republic (Yakutia).