§ Of the Voyage of Eärendil and the War of Wrath The Silmarillion

Now when first Vingilot was set to sail in the seas of heaven, it rose unlocked for, glittering and bright; and the people of Middle-earth beheld it from afar and wondered, and they took it for a sign, and called it Gil-Estel, the Star of High Hope. And when this new star was seen at evening, Maedhros spoke to Maglor his brother, and he said: 'Surely that is a Silmaril that shines now in the West?'