Quincy, you're on the money. And exactly why it's darker. You won... It's a mammoth molar. I will photograph your virtual brownie tomorrow and post it here for you... My best, Wi.
You're very, very close. You're an expert. This is very close. One more guess before tomorrow morning and you receive your free virtual brownie... if you're right... :-) :-)
I brushed the ironwood and bone with clear water before the shoot. No color correction, just Levels and a little saturation. Side-lit from one window, no filler light. Took a white-balance reading before I started the shoot... Wi.
Tibia of extinct bison bone (Pleistocene Epoch) discovered in Kotzebue, Alaska. Approx. 20,000 years old. 800 ASA with the X100, handheld in afternoon daylight.
Just playing around with some pictures from my last shoot of a kris sword-hilt carving of Ganesha - the 'wet plate' filter from a newly-downloaded Google Nik and my X100... Enjoy...