This ring of the Alliance to Restore the Republic was an antique from the Galactic Civil War. It was originally an accessory used by members of the Imperial Senate to secretly declare their Rebel allegiance in the Senate's corridors. The ring symbolized the hope of a new generation that will eventually join the older one. It was later passed down for generations until it made its way to the Resistance maintenance worker Rose Tico prior the mission to Canto Bight.
In 34 ABY, during the mission, Tico gave the ring to Force-sensitive and stable boy Temiri Blagg to demonstrate that she and Finn were with the Resistance. From that point afterwards, Blagg carried the ring with him.
- Star Wars: Episode VIII The Last Jedi (First appearance)