Hello, and welcome to Final Fantasy Answers. What question do you have today?

Both are very rare 5% drop items from two of the most difficult enemies in the game - Adamantite comes from defeating Long Gui or as a prize in chocobo racing. Trapezohedron might be rarely dropped from the superboss Yomi who appears in Archylte Steppe during storms. There is no real effective way to farm either item. -- Emperor-PSPField Borghen LeonDK 12:03, November 26, 2013 (UTC)