This place is then known as: The Fairy Circle [The Garden]

Design:

It was really hard finding a stone that I thought would fit. I eventually found the anyolite (ruby in zoisite) and decided to remove the ruby. Originally, their color palette was leaning more Alexandrite, but that's already a fusion in SU canon and I don't want to mess with that too much.

Overall, I was thinking along the lines of a fairy knight, a forest guardian of sorts. The cape and fur collar are meant to resemble a moth and the horns from Cleo are formed to look closer to antlers.

Story:

After the events of pseudo-3rd Life, Lizzie, Ren, BigB, and Cleo find themselves separated from the other gems and are unable to reconnect. Finding it more safe for themselves to stay put and wait for an eventual rescue, they create a sort of safe haven/nature reserve where they spend most of their time generally tending to the wildlife.

During their time in the Garden, Lizzie and Ren learned to better understand each other and began to grow closer. From their disdain of the other Diamonds and the structure of Homeworld to their respective missing halves, the Garden has done wonders in allowing them to see eye to eye. Accompanying their respect for each other is a fondness that wasn't quite there before, as their bond has led to an almost codependent friendship.

On the other end, Cleo and BigB are just generally polite with one another and are mostly amicable. They understand that they must all stick together if they are to find their lost companions, but neither have particularly latched onto the other with that same desperation that Lizzie and Ren have.