MAPEI's Ultracolor Plus FA and Ultracolor Plus Max grouts are a great choice for grouting installations of pebble stone and river-rock mosaics.
MAPEI's Keracolor U grout is unsanded. So, it's a great choice for grouting most installations of glossy wall tile. Other good options are Ultracolor Plus FA grout and Ultracolor Plus Max grout. When grouting installations of antique or handmade wall tile, it is recommended to build a mockup (sample board) or, at the very least, test these products in an inconspicuous area before grouting.
MAPEI's Kerapoxy CQ, Ultracolor Plus FA and Ultracolor Plus Max grouts are great choices for pool installations and other submerged applications.
MAPEI's Keracolor S Sanded Grout, Keracolor U Unsanded Grout, MAPEI Flexcolor CQ, Kerapoxy CQ, Ultracolor Plus FA and Ultracolor Plus Max grouts are all recommended for use outside in uncovered, exterior areas.