This is a large section of fossilized deer antler recovered from the Peace River in the Bone Valley formation of Florida. This dates from Pleistocene period (approx. 11,000 to 2.5 million years ago). It likely came from a white-tailed or black-tailed deer not too different from those we still see roaming these same areas today. This piece is very well preserved and is rock solid. It would be ideal as a knife handle or for scrimshaw. It measures 4.5" inches in length and is tapered on one end.
Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing the specimen shown.