Pocket Town Stones are Purple/Blue versions of Town Stones. They are the exact same height and width as a normal Town Stone, and are merely just recolored.
The Pocket Town Stone costs 500 gold.
A pocket stone can only be placed in a pocket universe. It makes the space of the pocket universe turn into a town so others can place blocks down but the size is still the size of the original pocket universe. It can be expanded like a normal Town Stone. You can use 10 plat to expand it to a normal Town Stone with /townupgrade. It is very useful for beginners that just want somewhere to build with some friends due to the fact that a Pocket Town Stone grants the ability for other players to build in ones pocket universe..