If you are using Alpha Ceramica diamonds, they should work fine.
Try using your granite powder with Crystallizer (no water) and #0 steel wool. Wet to dry over and over until you get the desired pop.
Not sure how they managed to scratch porcelain but it will be the same roughly as above. It will take longer as a quality porcelain is actually harder than granite.

Sent from Bob Murrell's iPhone
M3 Technologies, Inc.
865-607-0957
Office 800-342-4533
www.go2m3.com

> On Jan 11, 2023, at 8:16 PM, Tony Deluna <tndeluna@gmail.com> wrote:
>
> Hi Bob
> On the Quartzite The polish is really close, I would say 95% but I can still notice a very very slight difference. My tech used Ceramica diamond pads wet.
> My customer has a large island & counter top with a few grinder marks here & there that were originally left on the slab that they didn’t notice when they bought it.
> Because the Quartzite is so hard I don’t want to have to do the whole counter to blend it out if I don’t have to.
>
> The Porcelain countertop is a one piece slab. A brand new install. The installers put some long scratches here and there.
>
> I’ll probably do the test myself tomorrow. What type of diamond pads would you recommend?
>
>
> Tony DeLuna
> Cell 925-437-1559
> Biz 925-625-9625
> www.PatriotStoneRestoration.com
>
>> On Jan 11, 2023, at 4:45 PM, Bob Murrell - bmurrell at m3techinc.com <sccpartners@stoneandtilepros.simplelists.com> wrote:
>>
>> Tony,
>> What type of diamonds did you use?
>> Treating the quartzite similar to granite normally works.
>> Not sure why you would want to repolish the porcelain but this also should respond similar to granite. I e done this successfully several times in the past. Should be no reason to use any low grit diamonds as I would just replace any damaged tiles, if possible.
>> Do a test to confirm the results and procedure. Call me to discuss if you need to.
>> Good luck
>>
>> Sent from Bob Murrell's iPhone
>> M3 Technologies, Inc.
>> 865-607-0957
>> Office 800-342-4533
>> www.go2m3.com
>>
>>
>>>> On Jan 11, 2023, at 6:30 PM, Tony Deluna <tndeluna@gmail.com> wrote:
>>>
>>> Hey Pro’s, happy new year!
>>>
>>> I’m preparing a couple of samples for a few  customers…
>>>
>>> First test
>>> Tajmahall Quartzite Sample; I can’t seem to get the polished shine to 100%.
>>> After diamond honing up to 3,000 We used the MB 20 granite polish then MB 22 which worked better but still not good enough…
>>> Any ideas?
>>>
>>> Second test
>>> Level Marmi - Statuario Michelangelo Slab Polished Porcelain Sample;
>>> I can’t seem to get the polished shine to 100%.
>>> Diamond Hone finished at 1,500 then polished with Cerium Oxide glass polishing compound. Not good enough…
>>> When we diamond honed wet to 3000 with Ceramica pads it was leaving brown marks from the pad so we backed off and finished at 1500.
>>>
>>> Please advise.
>>> Thank you!
>>>
>>> Tony DeLuna
>>> Cell 925-437-1559
>>> Biz 925-625-9625
>>> www.PatriotStoneRestoration.com
>>>
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