I just located a guy here in town who has Sheoak listed on his site. I don't know if it is dark or curly but maybe you can contact him. www.Leetreewoodworks.com, email is ltannen@bellsouth.net. He has alot of Australian burls for pen blanks and other turning blanks. Tried calling him, but he's out of the office at the moment. Phone Number is 386-788-3375