Mr flemming,
The knife I was working on today has ebony bolsters. This particular ebony came from ebay and is without question the BLACKEST ebony I have ever seen. I believe the name was incarssia ebony. I am not sure of the spelling, and do not know much about it and haven't used it enough to know if I like it, but I know I love the color! Generallly I use Gabon ebony, but this stuff is just so much blacker that I had to try it. Just something to think about. Also it is more expensive but not alot.
Matt Doyle