The Gembound is a Furvilla created species. The only way to turn a Villager into a Gembound is to use a Gembound Morphing Potion on them, which can be bought from the FurDollar Emporium for Furdollars 2000. The potion can also be sold or traded by other players. The Gembound's colors reflect the twelve birthstones.
Gembound Diamond

There are 15 currently known colors of the Gembound.