|This article is a guppy. Please help it grow into a King Guppy.|
The Diamond is worth $200. King Guppies and Carnivores drop diamonds and Starcatchers give diamonds in exchange for a Star. Amp also gives you diamonds by electrocuting all of your Guppies and Brinkley gives you diamonds if fed for a particular number of times. When you destroy an Alien (excluding Cyrax), you will also receive a Diamond.
The Diamond has a resemblance to the Gems from Bejeweled.