XL Frag disk needed

[acropoora]

Why not mount it to live rock and let it grow?

Honest answer, because it won't be as easy to cut and sell.

 

[Almondkc]

I have used rough granite (typical tumbled-don't try polished) tiles before and they worked well. Just need to remember they are porous and the chalice would really adhere to it. You can get all sorts of sizes from your local tile and granite counter top companies - even scraps they are pitching.