Source: Middle-earth/First Age
Disclaimer: Tolkien beheld the glory of the Firstborn... Kortirion admires from afar.
Luminous gold shone softly, darkening to shining copper and clear amber beneath broad banners, clouds that trailed a thousand shades of rose across a sky smouldering with livid colours more beautiful than fire. Maglor gazed westward, pale amethysts and corals deepened to richest ruby, garnet and smoky sapphire above a silent land misted grey-violet, where still waters lay as slabs of gilded porphyry and lapis.
He bowed his head gravely, hand to heart. His father had made jewels that captured the light of the Trees, but even he could not capture the glory that Ilúvatar gifted to Arda’s twilight skies.