Aquillian crystal

Aquillian crystals are a form of currency from the Generation 1 continuity family.

Aquillian crystals are a form of intergalactic currency. The Cosmic Carnival accepts them as payment.

Fiction

Marvel Comics continuity

Berko asked Sky Lynx if he had Aquillian crystals to pay for his and the Spacehikers' admission fees to the Cosmic Carnival. Sky Lynx did not have any, nor any other forms of currency and was thus forced to become an attraction at the Carnival. The Cosmic Carnival!