The ghost service number of World of Warcraft can only be mixed with random copies, and there are no gems. Ah, there are basically no gems in it, or they are sky-high, so where can I sell them?
Gems have to be professionally cut, but if you are asking about the raw materials of gems, there is an NPC next to Dalaran Jewelry Trainer, which sells raw materials of various colors of gems (that is, epic gems without attributes), and 20 brands are changed to a stone. Now there are triumphal heraldic heraldic arms. So you have to go to a bunch of heraldic quartermasters in Dalaran to exchange the arms needed to buy gems ~ only auction houses and jewelry processing professionals sell attribute gems.