Silmaril -

The (Quenya: Silmarilli ) are the most significant artifacts in J.R.R. Tolkien’s legendarium, serving as the central catalyst for the events of the First Age of Middle-earth. These three peerless jewels were created by the Noldorin Elf-lord Fëanor to capture and preserve the untarnished light of the Two Trees of Valinor —the primary source of light before the creation of the Sun and Moon. The Nature of the Jewels

The Silmarils became objects of extreme desire, leading to the central tragedies of The Silmarillion : silmaril