Home » Categories » Natural Stone Q & A’s

honed black absolute

I am very confused about honed black absolute. I need to use two different types of granite, one for countertops and one for island top. Will I have a problems with spotting on the honed black absolute countertop? I need the black absolute to look dark grey so I don't know if color enhancing it is an option. It may make it too "black". Is the only "real" black absolute from Zimbabwe? If what I have on hold is not from Zimbabwe, is it real stone or what is it????
 
Dear Patricia:
Starting from the end, the only stone that should legally carry the label of Black absolute (a.k.a. Nero Assoluto) is not from Zimbabwue but from South Africa. The one from Zimbabwue is a lower quality stone and is the perfect candidate for honing, because it would never become black by polishing it. That said for record's sake, mechanically Black Zimbabwue is an excellent stone.
Now, about the maintenance issues, there is a unanimous consensus about the fact that hone-finished blsack "grasnite" presents maintenance issues.

The problem with honed black "granite" is that it is not, well … black any more! Most black stones are but an optical illusion: they become black only when highly polished, or when wet. (See the back of your slab to see the real color of your stone!) As you take gloss off the stone surface (and honing does just that) you lose depth of color and the stone turns gray; but when you wet it ... here it is black again! As you spill oily liquids, or you simply touch the stone surface with your fingers (perspiration), you're going to have all sorts of dark surface stains that are a terrible eyesore. Please notice that I said, surface stains, not imbedded stains. In fact, you can clean those stains off (though with lots of labor), while if they were imbedded you would have to poultice them out. If you apply an impregnator/sealer to the stone you will not solve your problem one bit: in fact the sealer will only prevent liquids from being absorbed by the stone (which in the case of black honed "granite" is an unlikely event to begin with), not the staining of its surface.

Any solution?

Well, yes: you have to give up the gray! (And you "can't" you're going to have a problem with no solution - as simple as that.)

If you apply a good-quality stone color enhancer to your countertop instead of an impregnating sealer (a good-quality stone color-enhancer like MB-6 is also an impregnator/sealer) it will turn it permanently black, while preserving the hone finish. In that way, the surface-staining problem would be minimized.

Let's just hope that your fabricator, in their “infinite wisdom,” did not apply an impregnator/sealer to your stone: this would have to be stripped (not an easy feat!), or else the color/enhancer wouldn't stand a chance to work properly.

And don't you forget that in order to upkeep your stone and the color enhancer, your best bet is to use good-quality specialty products for stone.   

Will you now please read and sign our Statement of Purpose by logging on at: http://www.marblecleaning.org/purpose.htm? By spreading the word about this valuable site among your friend & family and the stone trades' people you've been dealing you will be rendering everybody a valuable service!   

Moreover, do take advantage of the plethora of FREE Helpful Hints available at: http://www.marblecleaning.org/helpful-hints.htm. They're on the house!

Thank you.

Ciao and good luck,

Maurizio Bertoli

 

www.marblecleaning.org – The Only Consumers' Portal to the Stone Industry Establishment! 
Attachments Attachments
There are no attachments for this article.
Comments Comments
There are no comments for this article. Be the first to post a comment.
Related Articles RSS Feed
Sealing granite countertops - streaks!
Viewed 2547 times since Tue, Sep 11, 2007
stone classifications
Viewed 447 times since Wed, Feb 20, 2008
Pre-Sealing travertine before grouting
Viewed 615 times since Mon, Mar 17, 2008
Travertine in kitchen
Viewed 368 times since Sun, Aug 26, 2007
Will impregnator change color of Alabama White Backsplash and Counter
Viewed 302 times since Thu, Jan 1, 2009
enhancing the surface of honed, filled travertine
Viewed 1039 times since Sun, Sep 9, 2007
Granite with marks appearing
Viewed 1656 times since Thu, Jul 19, 2007
travertine pool coping
Viewed 1018 times since Mon, Oct 22, 2007
’water marks’ on marble tile countertop
Viewed 341 times since Mon, Jun 23, 2008
Dark Tropical Brown Granite - darker area?
Viewed 424 times since Thu, Apr 17, 2008