absolute black granite

Greetings, A question on absolute black granite. I have come to understand that fake absolute black granite can be determined by applying methylene chloride. If its a fake,it will turn the stone to its natural grey color. If its real, it will have no effect. Is this true? And secondly, where can I find methylene chloride? Thanks

Dear Bill:

MC was the thing to use to find that out up to a few years ago. Apparently the crooks have come up with some sort of black shoe-shine that is almost solvent-resistant. However, acid will tell for sure. Spill some white vinegar of lemon or lime juice on a piece of scrap, let it sit there for several minutes and then wipe it dry.

But… if marblecleaning.org could have its way, there wouldn't be any need for this, because all that phony stuff would be banned from the market.

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 zio Bertoli

www.marblecleaning.org – The Only Consumers' Portal to the Stone Industry Establishment!

Article ID: 1386
Created On: Thu, Apr 17, 2008 at 7:29 PM
Last Updated On: Thu, Apr 17, 2008 at 12:00 AM
Authored by: Maurizio Bertoli [mail@mbstone.com]

Online URL: https://marblecleaning.org/knowledgebase/article.php?id=1386