The Silmarils were created by Fëanor in Valinor after the unchaining of Melkor. According to a legend, Fëanor conceived the idea of capturing the light of the trees from the hair of Galadriel, which shone with gold and silver. Fëanor gave his heart to their making and could not duplicate them.
Fëanor wore the jewels at festivals and the Eldaradmired them. Melkor coveted their light and soon, corrupted by his lies, Fëanor started to lock them away, and became greedy for them. After Fëanor was exiled to Formenos, the Silmarils were stored in a chamber of iron.
Together with Ungoliant, Melkor destroyed the Two Trees. The Silmarils now contained all that remained of the light of the Trees. The Valar entreated Fëanor to give up the Silmarils so they could restore the Trees, but he refused.
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