If you want to create your own concrete sculpture but don’t have the technical knowledge, I suggest that you check out this site which covers the essentials plus some:
The author, Andrew Goss, also has a book if you want more details…
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Etsy has some wonderful artists on it selling their wares so if you want to get a handmade artistic gift at a very reasonable price, be sure to check out the site.
I’ll put in a plug for a friend of mine who makes pottery…
MissPottery.Etsy.com. Not exactly mosaic although she knows that if she drops anything, that I’ll take the bits!