I am willing to trade my "Worthless Wood" pen blanks with someone that has any type of burls that cannot be used for anything else other than casting. I have pics of my blanks below for those wanting to see my work. You wont be dissappointed.
I have a bunch of this mulberry that can't be used without casting. It isn't technically burl (I already got jumped on here for calling it burl

) but it is all scar tissue and has wild and wonderful grain and color.
Nice pieces of wood Sharon...!
As for being "jumped on" about the issue, I'm not surprised, as I had to correct some folks myself about the difference between a "burl" and highly figured pieces of wood which in my view can have a swirly grain identical to most burls and reason why I believe is quite OK to call it "burled wood" but not "burl".
Burls are very specific pieces of wood that can have a numbers of origins and reasons to develop however, some pieces of wood have grains that are far from straight, crossed/diagonal or circular, some even have "eyes" such as huon Pine and others, that doesn't make them a burl.
Where it gets a little messy is when, woods/blanks are put for sale and use the "burl" wood to ones advantage, if you know what I mean, as soon as people hear the word "burl", they think true burl formation wood, some will know the difference but most will not, and there is where I have a problem with, is using the "burl" wood if the wood is not a burl.
I don't have many burl species growing in my area however, I have a fair number of them that have developed some very nice "burled" areas, I call them what they are and if justifiable, I price them no different than I do with any true burl wood, the person buying it will know it the wood/blank justify the price, regardless of its name or grain formation type.
I know that, lots of people will read this post, and my words are more directed to them than to you so, don't get upset with me just because I'm "detailing/dismantling" your simple comment, is important that people know the difference and is up to us to make it right...!:wink::biggrin:
Cheers
George