Also known as the Mirror of Truth.
It was created by Silestrea and given to the elves of Kenlune, where it remained in the royal lineage for generations. It is a mirror that reveals a person's inner beauty. Those that come out of the trials proving their inner virtues and how to change for the better if they choose to. It is used to uphold and keep the people in power, making sure they are kindhearted and good. THe elven warriors would always be tested by this mirror to prove they are worthy of upholding and protecting the city with their very lives. It is the most priceless artifact to the elves.
It has the power to tell if someone is good or evil, or struggling to choose a side. THe mirror knows things that we have yet to know. It has powers that are yet to be unlocked. Allegedly, those that fail the trial for a particularly violent reason face real and disastrous consequences. The mirror would not necessarily make it so but could make waves in the strands of reality to make it so. It likely wouldn't completely solve your problem and may even make it worse.
We underwent the trials and passed. It was then taken by Zen as a trade for the hostage prince.
Sindri later learned its history from Histix on Iso's ship.