I just found a website that has many different mixes of seaglass and many sizes of marbles that can be used in mosaics. You don’t need to stick with square tiles, and tumbled glass is fun to work with because of the sheer variety of shapes and textures. rainbowturtle.com is worth a look!

Just a little site about mosaics and mosaic tiles. If you want to see some tile for sale, check out Mosaic Tile Arts.