Eye of Onyx
The Eye of Onyx is a black sphere, a enchanted piece of SandWing Treasure, with wings made from molded, beaten gold, (said by Sunny to resemble Wings of Fire) and set on a chain of golden links. Due to its name it is almost certainly made from onyx.
Whoever holds the Eye of Onyx rules the Kingdom of Sand, as long as the current SandWings queen has died. Therefore, if Princess Blaze, Princess Blister or, Princess Burn were to have the eye they would've become queen and stopped the war as Princess Sunny did in The Brightest Night. Sunny had given it to her mother, Thorn, the leader of the Outclaws. Afterwards, Blister tried to steal it, resulting in her death. Since the current queen was alive and hadn't either died or given Blister the Eye, she was electrocuted and dissolved.
