Dear Robin:
Well, just look at that thing!... Does it look like granite to you?!
No “exotic granite” (whatever the heck that means) could possibly be granite.
What it is I don't know. And neither does you fabricator or anybody else, for that matter, unless some geoscientist somewhere in some corner of the planet had a chance to run a mineralogy test on that particular stone. Which means that most probably your fabricator has not the faintest clue as to whether that stone has a lot of quartz in it or any at all.
Besides, it is certainly not the presence of quartz that could be pointed at as the culprit for natural fissures. Many a quartzite (made almost entirely of quartz) have no fissures at all. Quartz is also one of the major components of true geological granite.
All that duly said, so here we are again with the endless issue of crack vs. natural fissure.
Of course, if I could actually see fissures/cracks, it would take me 1/10 of a second to tell them apart, but I can understand that it can be somehow difficult for a consumer to do the same, especially under the pressure of an “expert” who goes on record with some cacca-baloney explanation.
Your only option is to consult with a local capable stone restoration contractor that's familiar with granite slabs.
Needless to say, none of this would ever happen if marblecleaning.org could have its ways. But we need the support of the consumers of stone like you to gain strength and eventually succeed.
May I ask you now to please read and e-sign our Statement of Purpose at:
http://www.marblecleaning.org/purpose.htm?
Ciao and good luck,
Mauri
Article ID: 1515
Created On: Wed, Jun 25, 2008 at 1:16 PM
Last Updated On: Wed, Jun 25, 2008 at 12:00 AM
Authored by: Maurizio Bertoli [mail@mbstone.com]
Online URL: https://marblecleaning.org/knowledgebase/article.php?id=1515