Any gem of the Rose name was sealed away for the crime of the one. Iron Roses, Desert Roses, Inca Rose. But, when deciding the last gem to make in the memory of Pink with her essance, White Diamond decreed that this gem would be called Roselite.

The beastly thing emerged, the only one of its kind. And it would stay that way. Blue Diamond decreed it would hold the weight of their anger and Rose Quartz. Basically, Roselite would be a stand in for everything the diamonds wanted to do to Rose Quartz.

It has been shattered and repaired, beaten, tortured, made a foolish servant - on but a chain and collar and hurt horribly as it served like a Pearl. Anything they could think of, by both Blue and Yellow, but mostly Blue.

Due to the powers of Blue and Yellow, it is permanently crying, and permanently alight with Yellow Diamond's lightning might.

Era three brings it to the Zoo, and other Pink Diamond structures like the Garden, lost and unsure what to with the burden of the memory of the dead but not Pink Diamond. The burden of all the torture they've endured.