Buckeye Burl is one of the best woods for turning once you get past the smell. Kind of like urine when the wood is a bit green. It has a great color combination of blue and yellows mostly and is about 3 times as hard as cork I would say. It can be turned when green and doesn't shrink much and takes a polish very nicely. I see it as large turnings like bowls and small items like pens. You can turn it green and finish it off with a heatgun for about 2 minutes per sq ft and then you can sand away. No smell lingers after the pieces dry and they show some of the most striking figure in burl.
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have some great pieces on my website if you are interested just go to the above url. I don't claim to be an expert but I do enjoy working with wood and like talking about it.