The Silmaril wants to be returned to the world’s roots. It will whisper to the bearer in moments of despair, tempting them to break it—not out of malice, but out of longing. Those who carry it too long find fate twisting against them: wars start over their head, lovers betray them, and the jealous dead rise to steal it.
Fëanor stated he could never replicate them, as a part of his own spirit was poured into their making. The War of the Jewels The theft of the Silmarils by the Dark Lord (Melkor) triggered the "War of the Jewels". The Theft: silmaril