You are a newer addition to the crystal gems, to replace a half of a fusion.. Ruby, otherwise Garnet.

You hadn’t really known what had happened to Ruby, some say she went off and became a cowgirl, bur nobody truly knows

One day your walking around the temple, looking for either Pearl or Sapphire, to see that the two fused

“Eh?! Oh dear nobody was supposed to know of this.. please don’t tell the others..”

She seemed rather scared, not knowing what to do and not wanting to unfuse, so to break the ice you ask for the fusion’s name

“Sapphire and Pearl have decided to call me.. Larimar.”

she said with a warmer smile, her dress fluttering as she did a little twirl alongside it