Will it work for grave stone made of granite? Want to clean and polish it.

it should, if the surface is rough it may soak up quite a bit of the product initially though. I'd bring a couple heavy duty rags to apply it evenly.

Can this me used on an unsealed limestone hearth?

Yes, but this will not really seal your stonework. Also note this cleaner is no more effective than basic soap and water cleaning. If it is new limestone, I recommend getting it professionally sealed first or at least using a basic sealer like Black Diamond Nex-Gen Natural Stone Penetrating Sealer and then using a stonework polish if you want some luster.

Can this be used on floors?

Hi Patricia, It absolutely can be used on floors. I use this on my polished travertine floors all the time.

do you need a separate sealer or will this be able to seal just on its own?

Use the Black Diamond sealer initially and then you can use this product to clean and seal. It is a fabulous product and I use it daily to keep the counter looking good as new (our granite is in our bathroom and between hairspray and cosmetics, dirt can build up fast.). We used the sealer initially four years ago and counter looks good as new today.

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✨ Protect & Perfect Your Stone Surfaces with Every Spray 🛡️

DUAL ACTION POWER - Cleans and seals simultaneously, saving you time while protecting your stone.
VERSATILE STONE CARE - Safe for granite, marble, travertine, limestone, quartz, and more—perfect for any upscale space.
DAILY DEFENSE AGAINST STAINS - Guards countertops from oil, coffee, wine, and even peanut butter mishaps.
EFFORTLESS STREAK FREE SHINE - pH neutral, hypoallergenic formula ensures spotless, food-safe surfaces every time.
TRUSTED PROFESSIONAL QUALITY - Made in the USA and endorsed by stone care experts for premium performance.

Black Diamond Stoneworks GP QT Plus is a ready-to-use 2-in-1 cleaner and sealer designed for natural stone surfaces like granite, marble, and limestone. Its pH neutral, no-rinse formula cleans streak-free while the built-in sealer protects against stains from everyday spills. Endorsed by professionals and made in the USA, it’s ideal for daily maintenance to keep your stone surfaces pristine and protected.

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Product Name	2 in 1 Cleaner & Sealer for Granite, Marble, Travertine, Limestone, Ready to Use
Additives	Hydrogen Peroxide
Weight	4 Pounds
Volume	32 Fluid Ounces
Units	32 gram
Brand	Black Diamond Stoneworks
Format	Spray

Black Diamond StoneworksGP QT Plus 2 in 1 Cleaner & Sealer for Granite, Marble, Travertine, Limestone, Ready to Use, 1-Quart (32oz)

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