Source for Ivory for razor scale repair?

[MattW]

I have a beautiful antique I. Dowler English razor that has a broken scale. I've searched the web a bunch trying to find a piece of ivory to reproduce this broken half of the scale, but am having trouble finding anything in a 6 inch length. The piece I need is rather thin (about 1/16") x 6 x .75.
Any tips for a good legal source?
I know some may elect to epoxy on a new piece the repair the broken tip, but what I'd prefer to do is replace the broken scale but keep the broken original with the razor for originality.