I agree with others, purpleheart, which I've heard some people call rosewood because it is hard and oily, but it isn't a true rosewood (genus dalbergia). I'd suggest keeping the stuff whole until you're ready to use it, nothing worse than having 50 pen blanks of something but needing a 5" x 5" chunk. Also probably not worth the effort to cut up for sale, not sure if this is something you were considering, just my 2 cents.