Dear Jason:
The answer to your last question is, no.
It's immaterial, however, because the real issue is that I don't have the slightest idea of what stone you're talking about!
There's no such a thing like black travertine, hone-finished, polished or what-have-you.
So, unless somebody painted your travertine with some black flat paint, try to find out what stone you really have and then we'll take it from there.
Ciao and good luck,
Article ID: 431
Created On: Thu, Sep 6, 2007 at 1:10 PM
Last Updated On: Thu, Sep 6, 2007 at 12:00 AM
Authored by: Maurizio Bertoli [mail@mbstone.com]
Online URL: https://marblecleaning.org/knowledgebase/article.php?id=431