A plaque on it reads:
"Grime and residue ruining your sparklies? The Sparklematic 5200 puts the shine back in shine-tastic! Insert the item you wish to clean and deposit three silver coins in the coin slot. Give the Sparklematic 5200 a moment for operation, and voila! Your valuables will emerge clean and shiny!"
The Sparklematic offers a quest (  ), which takes one plus 3 and returns a gift with random items in it (usually some kind of mineral, ore or stone). This same operation can be repeated with the repeatable (  ).
There are multiple Sparklematics in the Clean Zone. Since the grime-washing takes a little time, it can be more time-efficient to use more than one machine to clean many objects.
The Sparklematics start the following quests:
See Gnomeregan NPCs.