malachite ORE and malachite GEMS are completely unrelated treasure items. The game suggests gem cutters can polish one into the other but it is BS... They are just completely unique items with no connection whatsoever.
You are virtually guarenteed two malachite gems from doing some quests I wouldn't spoil. There are 15 of them total in the game (the other 13 you sell for lots of money if you get them)
