I'm looking for advice on what to use as an adhesive for some highly sculpted artistic tiles that I am ordering. They are heavy and I don't want to blow the adhesive. The company that makes them is Urban Renaissance Sculpted Stone Tile. Have any of you used them?

Sygrid

Never used them but it would help if you knew what the actual stone was and what substrate you are fixing to. Then we can probably help

Kev

If they are stone, it may be better to prime the rear of them 1st before fixing, and use strong powdered adhesives. Stone also should have an impregnator sealer applied to resist staining, and help the grout cleaning process....Gaz

What should I prime them with?

Thank you for responding, Sygrid
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Thanx Kev,

I'm putting them on an old rough brick Fireplace. The tiles are concrete. Thanx again for any help you can offer.

Sygrid

The surface of the fireplace needs to be cleaned and then you need to install lath and a scratch coat just like any other veneer job.
If they are substantial stones and not veneer you need to install angle iron on the bottom lag bolted to the wall and use wall ties to keep the stones tight.