A rosette on a medal ribbon is a decorative device often used to denote additional honors or achievements associated with the medal. It is typically a small, circular ornament made of ribbon that is gathered and folded to resemble a rosette flower.

In the context of military or civilian awards, a rosette may be attached to the ribbon of a medal to indicate that the recipient has received the award multiple times, or to signify a higher level of distinction or merit.

For example, if a person receives a medal for an act of bravery and then receives the same award again for a subsequent act of bravery, a rosette may be added to the ribbon to indicate the additional award. This practice allows the recipient to wear a single ribbon with multiple rosettes, rather than multiple individual medals.

It's worth noting that the specific meaning and design of rosettes can vary by country and organization, so the exact significance may differ depending on the awarding body.