Well first off you need the following:
- some gold to start off with.
- High jewelcrafting or a friend that does.
- basic AH knowledge
First, ask your friend what kind of rare gems he can cut. If he can cut gems that sell big, like +attack power, or +spell damage.
Then, search the auction house for UNCUT rare blue gems (blues). Buy them cheap and in bulk if possible.
Trade your friend let him cut them, then resell them for higher prices.
Example:: I bought a rare blue gem (name escapes my mind) for 20g. Then I asked my friend to cut it into +8 spell hit. I resold for 38g and made 18g profit. I did this all in about 5 mins, without any hardwork.
Thanks for reading my guide!