Meteorites are a bit more interesting than the others, especially as they can range from small to absolutely massive. The catch with these is that you don't know the type of meteorite until you have it identified. The raw price of a meteorite is based on its weight, and there is a large element of risk in finding out how rare it is, as you could reduce the value. Meteorites, in their first form, are grouped as follows (maximum price is listed based on maximum weight):
Small: 30 Simoleons
Large: 200 Simoleons
Huge: 4,500 Simoleons
After analysis, these prices could be increased by as many as 10 times over! That could make a small meteorite very profitable indeed, but of course the more expensive meteorites are incredibly rare, so this is an unlikely outcome. You can sell meteorites with the inventory sell section (marked by a faint Simoleon symbol), or put them in your house. Huge meteorites can make attractive garden ornaments!
Huge meteorites may be found in the cliffs above Crystal Springs, as well as in the clear land between Pleasant Rest Graveyard and Fort Gnome Military Base.
Large and Small meteorites are dotted around the rest of the valley, though premium locations for seeing them are at Pinochle Pond, Stoney Falls and on the beaches.