Dragonborn's Hearth Honor
This is half of a broken gemstone, blueish-white on the outside and blood red on the inside.
The Shattered stone was discovered rather recently by a coetry of Dragonborn Palidens of Ethris.
Even though it is a recent discovery, news amoungst the exiled dragonborn has spread quickly.
It is rumored that if the other parts of the stone are found and put back together, the Dragonborn Empire will rise up once again. What powers the completed stone would have is a mystery.