Pearl? Who dat?!

Hey guys!
Topaz here!
There may or may not be another evil gem! You know how Citrine turned bad right? Well, there is rumour that another gem (who isn't a real gem, like Citrine is a mineral) is here. I talked with some koalas who hang around near that top platform in Sarepia Forest and they said that their friend hadn't responded to any jamagrams that they'd sent. They went to their dens to figure out what was wrong. What they saw terrified them! The koalas were in the corner of their den, shaking and when questioned, they had feathered masks on, and then turned around silently. Then they faded away, their spirits seen floating to the skies above. Due to the popularity of the feathered masks, causing evil with them would be a smart choice. I dug around the Chamber of Knowledge and I found out some notes from the Alphas. They said, I quote,

After months of research, The Sisters have finally been summoned. There was one more than we would have expected. We were surprised at first with the appearance of Citrine, but now with this other one... I can't ever tell the other Alphas or The Sisters about her. Her force is too strong and evil, thus I must banish her whilst the whole of Jamaa are safe and sound.

She's gone.
Finally she has been banished from Jamaa. But I have a feeling that she may come back. Her evil is so strong that The Yellow Elephant would be ashamed. If the evil beast found her and joined her, along with Citrine and The Elephant's power, the protective power of the Sisters would be disrupted and Jamaa would fall under the control of The Yellow Elephant and the corrupted Sisters. It' said horrible thought, I know, but us Alphas can never be sure. We have to always be on our guard. Oh, right, the sister. Her name... Is Pearl...
Liza

So please, watch out, for she has an unknown power that could engulf the land of Jamaa into chaos caused by two corrupted sisters and an angered spirit.
We can't let this happen to any more animals.
Only the eternal form can save us now.
Save us,
From Pearl...