Marble slabs

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I have some marble that I acquired a few years ago and have not found a project for it. There is five slabs that are approximately 16.5" wide by 54.5" high. There is a base strip of marble that is about 2" high. There are also four more pieces that are the same width and approximately 20-30" tall. The dried mortar is on the back. It is grey spec'd marble and looks good. I just couldn't find a good project to use it on. Even if you just want a couple pieces, that's fine too. It is behind my shed, hence the angled picture. It's heavy so I won't be pulling out all the pieces to sort through or display.