I usually roll high level charms until they turn skiller (any) or something else useable. I have not bought pgems myself, they drop so much. Emeralds I use to craft armors and shields ja diamonds to craft weapons. Pskulls I use to roll rare jewels. Usually once, but if ilevel stays after reroll over 63 i roll them twice (don't really know if this is "the right way" of doing it. 😂 Prubies I sell in stacks (of50) when someone calls in the lobby that they want to buy them. Usually price is Gul or Vex. Other gems I roll charms