Steve,
Onyx is treated like marble.
It is very soft and will flatten quickly.
However every job has its own set of issues ,
What type of grout has been used, will you be able to keep your grinding elements under the machine.how bad is the lippage?
You may need to grout the floor before grinding.
Are there loose tile issues and or missing grout,
Professional installation or a homeowner special.
Send some pics



Sent from my iPad

On May 14, 2014, at 6:32 PM, Steve Kivinski <steve@potomacstonecare.com> wrote:

Hello Gang -- I have an onyx floor job and there is some severe issues. Wondering if anyone knew how difficult it is to grind down bad lippage on this stuff. Is it more like marble or granite or somewhere between? Thanks in advance for any insight. steve k
Potomac StoneCare Inc.


On Fri, Sep 21, 2012 at 7:08 AM, Fred Hueston <fhueston@gmail.com> wrote:
Yes, treat it like marble.

On Thu, Sep 20, 2012 at 5:47 PM, <kdasilva@marbledoctorstonecare.com> wrote:

To everyone,
We are doing a restoration job for an entire apartment in Manhattan and they have a onyx vanity and sink in one of the bathroom which have become dull and needs some facelift .
They were originally polished, but across time and use they have lost their
sheen. I have no experience with onyx. Does it polish like marble? Is it
hard like granite? I haven't the slightest idea. Any experience out
there polishing this stone? 

<sigimg1>
Kelly DaSilva
Project Manager
Installing, Repairing and Maintaining of Natural Stone and Other Man Made Solid Surfaces in Both Commercial and Residential Settings. Serving the Tristate since 1996'
CT Office :289 White ST
Danbury CT - 06810
NY Office: 244 5th Avenue,Suite 2608 New York, NY 10001 (212)726-2518




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