There is a gentleman in Johnstown, PA that has an operation making impregnated wood for knife makers, cuemakers, gunstocks, etc. He has some really beautiful wood and a large selection to choose from. His work is breathtaking. His name is Nick Forosisky and his phone number is:
814-266-6634
It is not cheap, but extremely strong and stable once impregnated. He has natural shade resins as well a some wild color tints. I can vouch for the quality. He has also been in many Valley Forge shows. There are dealers for his wood, but this is the actual man that does the work, and would have the most selection to show you. He can also impregnate your own wood if you choose. But not many can boast the inventory of burls and spalted woods that Nick keeps on hand.