the gems can go on for infinty although it would be hard to make a lvl 20+ gem.... but ive seen a lvl 30 one on youtube (he was bored so he used CE after he beat the lvl)
mercury636 runescape is a famous MMORPG it has so many players more than:aq WoW fiesta mechquest you name it runescape has more players runescape has 130 MILLION players
 "Ragdoll Cannon 1.5"){kind=icon}
 "GemCraft"){kind=icon}
 "Sonny...NOT!!!"){kind=icon}