Orgueil shows evidence of liquid water having been present during crystal formation and is believed to be part of an ancient comet. Minerals within C1's indicate that they formed within a warm, wet environment and are the most water altered, least heat altered meteorite type. Orgueil is a very special meteorite containing a high 20% carbon and 20% metal in a dark black matrix. The lack of any visible chondrules or metal flake makes Orgueil one of the least visually appealing meteorites around - but from a scientific standpoint, WOW!!!
This meteorite is EXTREMELY difficult to obtain - rarely, some small crumbs and dust may become available but anything above a few milligrams hitting the private collector market is exceptionally rare.