Radice makes a very large variety of pipes; the basic finishing/grades are:

RIND Classical rustication, available in different colours (black, brown, tan, red, natural)
SILK CUT Sandblasted pipe, available in different colours (black, brown, tan, red, natural)
UNDERWOOD Scultured drop, usually available in the tanned colour
RUBINO Red smooth pipes
DARK Black smooth pipes. The coloring of these pieces is obtained "burning" the external side of the bowl, then polished.
RADICE Smooth pipes with a nice grain. Dark coloured.
CLEAR Classical smooth, with the distintive natural clear colour.
CLEAR F The "F" pipes are of the same colour of the CLEAR finishing, but the grain is much better.
CLEAR OP CLEAR colour, but with a birdseye grain
COLLECT The COLLECT grade is distincite of the shape; usually large or giant freeform, they could be found in any of the other grades (RIND COLLECT, SILK CUT COLLECT, CLEAR COLLECT, etc.)

Radice makes also a special series of pipes: the OIL CURED & TWIN BORE, available in ALL gradings and shapes.. Up today, those pipes where sold ONLY in USA through R.D. Field (www.rdfield.com) who is one of the largest pipes distributor of United States. Now Radice OIL CURED & TWIN BORE are available for ALL the countries, through the official RADICE WEBSITE (www.radicepipes.net).