I had the Walker Zanger crackle glass tile in my shower about 7 years ago. Redid all of the walls in the subway tiles in green, a little lighter than these: but same type. Within a year they had all dulled. Turned out, they weren't suitable for shower walls. i guess the constant water gets in and dulls them.
In defense of their company, after notifying them, they paid for the demo and all brand new tiles of my choice, plus installation.
They are beautiful, as is your Gramercy park. Your;s will be fine as a backsplash. It's says so on the product installation guides.
you can apply a sealer before you grout, as Cinar suggested. it will keep any residue out of the cracks.
go for it! such a nice change from all of the 'over-used white subway' !
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walker zanger mizu. - disc.
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