Gem cutting is a professional jewelry processing, and professional trainers can be found in any main city to learn. Take the alliance as an example, the method is as follows:

1, the player returns to any main city and talks with the soldiers.

2. Choose a professional jewelry processing trainer.

3. Then open the map and you will see the marked points.

When you come to the point marked in the picture, you can see the coach.

5. Click on the dialogue to learn about jewelry processing, and then you can cut the jewels.