Prologue:
There were five gems. They were a group of friends, living together on home-world. Then they weren't. In an instant, all their lives changed.
Jade, Tiger-Eye, Rose Gold, Opal, and Tourmaline.
They were all jetted down to Earth as an experiment for the Cluster. They were also sent to the Kindergarden to be broken and shattered.
But they didn't make it. They all got separated. Now they are long gone, home-world has completely forgotten about that mission, and those gems.