Blue Studs are worth 1000 Studs. They are somewhat rare. They are the second highest worth stud, the lowest being silver, and the highest being purple. When you destroy an object, it drops either a few gold or silver coins or a blue one. When you get a minikit, if you do the level again, it is replaced by a blue stud. Along with the other types, blue studs rain down in Barnett College if you beat the game 100%.