Buechel Stone Corp It has a similar look to Blue Ridge River Rock. Here is a link to it. I'll also give you a link to the rest of our mosic line. Hope it helps:)
This is one wicked mirror. I wouldn't use it in my own home probably, but it's really sweet to look at. Up against the rock wall gives it a major medieval feel.
http://www.buechelstone.com/shoppingcart/products/Blue-Ridge-River-Rock.html
http://www.buechelstone.com/shoppingcart/categories/Building-Stone/Thin-Veneer/Product-Lines/Mosaic-Line/