Lignum Vitae sounds latin and like it belongs on a State Seal on the wall. It also sounds expensive.
As a comparison point, my bamboo slabs come directly from that mecca of HD Sound Peripheral Equipment, IKEA. Some people might ignorantly call them bamboo cutting boards. For roughly $5.00 the enlightened will recognize them as exemplary resonant sound remediation barriers on par with the finest product from Mapleshade.com.
Of course in the interest of audio science, since you hooted the words Lignum Vitae (I believe its also part of the Harvard school song) you must now go forth and complete your research and deploy a pair. Bring us word of course of your result. I'm sure it will be stunning. I will also want pictures. And as you can see, there are no stilletos in the picture. I kept my feet out of the viewfinder.