Prism

The Prism is the currency of Skye's galaxy, as well as the main collectible in the game. They are gemlike rocks that are shaped hexagonally and appear to spin in place. There are many kinds, each of them different in worth.

Types and Worth
These are the types of Prisms, in order of least valuable to most. Black Prisms also exist, but they do not fit in with the others. When a black Prism is collected, all of the other Prisms around it are also collected, similar in behavior to the S-coin in the Mario series. The black Prism itself is equivalent in worth to one green Prism.
 * Green
 * Red
 * Blue
 * Yellow
 * Purple
 * Orange
 * White

Trivial Facts
The resemblance of Prisms to Rupees from the Legend of Zelda series has been noted by many. However, they are, in truth, ripped from Wario Land 4.

In FPI's Super Mario World hack, The Second Reality Project Reloaded, Prisms appear as the collectible in the game's secret world, Thirdspace. This is among one of the many SuperSkye references in the game.