Silmaril -

The other two remain lost: one in the molten core of the earth, one in the salt depths of the sea. They will remain there until the prophesied (The Battle of Battles) at the end of time, when it is said Morgoth will return, the Sun and Moon will be destroyed, and the two lost Silmarils will be recovered. Only then, at the remaking of the world, will Fëanor finally be released from the Halls of Mandos to surrender his greatest creations—the three Silmarils—to the Valar, shattering them to rekindle the Two Trees and restore the original light.

At this moment, Fëanor committed the most catastrophic error in Elven history. Driven mad by loss, he swore . He and his seven sons swore by Ilúvatar (God) to fight anyone—Elf, Man, Maia, or Vala—who dared to withhold a Silmaril from them. silmaril

: One was recovered by Beren and Lúthien and eventually given to Eärendil, who sails the heavens with it as the "Star of High Hope". The other two remain lost: one in the