The Silmarils (or Silmarilli), also known as the Jewels of Fëanor, were gems crafted by Fëanor from some essence of the Two Trees of Valinor; Laurelin and Telperion, before the First Age. They were among the most prized of all the wonders crafted by the elves and were coveted by many. It was said that the fate of Arda was woven about the Silmarils.