Rosincore

Rosincore is a fictional material appearing in the animated television series Steven Universe. It is a crystalline substance with a reddish-pink hue, often found embedded within corrupted Gem monsters. Rosincore is depicted as a vital component for the Gem Homeworld's ability to regenerate damaged or shattered Gems, functioning as a healing agent or a source of raw material for repair.

In the show's narrative, obtaining Rosincore often involves confronting and defeating corrupted Gems, which are remnants of Gems that have lost their sanity and form. The process of extracting Rosincore is not detailed extensively, but its significance is consistently emphasized. It is implied that Rosincore is a scarce resource, and its collection is a priority for the Gems who wish to restore their kind.

The appearance of Rosincore is visually distinct, characterized by its translucent, angular formations that can vary in size. Its presence within corrupted monsters suggests a connection between the corruption process and the material's formation or concentration. While the specific geological or alchemical properties of Rosincore are not fully explained, its function as a restorative element for Gems is a central plot device in several story arcs, particularly those involving the ongoing efforts to heal corrupted Gems and understand their plight.