Prismatic Gem

Prismatic Gems change the color of Unusual effects They can only be used on custom couriers with an Unusual effect (Socketed with an Ethereal Gem).

Legacy
Legacy color gems are displayed as Prismatic: Rare (#,#,#) where # is the RGB value of the color.

Explain legacy info here -Lemon

Compatibility
''Explain compatibility with ethereals here, make table? -Lemon''

History
Colors were previously changeable using Unusual Paint, a limited item. This was changed with the November 14, 2013 Patch.
 * All Unusual Paints were converted into Gem Packs.
 * Gem Packs contain a corresponding color gem and an Artificer's Chisel for creating a socket.