Pyrite

Pyrites (パイライト, Pairaito) are sentient mineral cubes in Magical Vacation and Magical Starsign. In Magical Starsign, they can be collected and equipped to characters as accessories, or sold for money.

The residence of pyrites is often associated with the whereabouts of Shallot. In Magical Vacation, they live in the Dark Realm at Abos Village, and over 800 years later in Magical Starsign, they occupy the land on Tektos' back known as Uponisbak.

In the Japanese version of both games, pyrites tend to end their sentences with a clinking noise (プププ, pu pu pu).

Physiology
Pyrites are small cubes of iron sulfite with L-shaped holes holes for faces. These holes have an orange glow, most likely in reference to how real-life pyrite will spark when it is struck by metal. They also score 6 on the Mohs scale of mineral hardness, making them slightly stronger than glass, but weaker than a steel nail.

Most pyrites are named after phrases used in normal conversations, though the spelling is written phonetically, and their names also reflect how they act. For example, a pyrite named Yerpushin Yerluk (you're pushing your luck) will warn people not to get on their bad side, or Wantza Layaroun (wants to lay around) is unmotivated and talks lazily.

When excited, pyrites make rapid chirping noises.

Equipment
When a pyrite is picked up at Uponisbak or Stone Giant, a party member can equip it in the accessory slot. It grants +1 MP% and +1 SPR.

Super Smash Bros. Brawl
A pyrite appears in the game as a trophy. Like other Magical Vacation series trophies, Magical Vacation is omitted in their appearances.

Trivia

 * Pyrites gain sentience when they are reach around 12 centimeters.