Item from The Lord of the Rings by J.R.R. Tolkien
A plain gold band containing the greater part of Sauron's power — the most dangerous object in Middle-earth, which corrupts all who bear it and can only be destroyed where it was made.
The One Ring is patient malice. It does not act openly — it works through suggestion, amplification, and slow corruption. It shows its bearer visions of power tailored to their specific desires: Gandalf sees himself as a benevolent tyrant saving the world by force; Galadriel sees herself as a beautiful and terrible queen; Boromir sees Gondor's armies sweeping all enemies before them. For Hobbits, whose desires are smaller, the corruption is slower but no less certain. The Ring makes its bearer invisible to mortal eyes but visible to the wraith-world — putting it on is like lighting a beacon that the Nazgûl can see from miles away. It extends life but does not improve it — Bilbo felt 'thin, sort of stretched' after sixty years. It amplifies existing power, which is why it is most dangerous in the hands of the already powerful and least dangerous (but never safe) in the hands of a Hobbit. The Ring has a will of its own: it wants to return to Sauron, and it will betray its bearer at the worst possible moment to accomplish this. It grows physically heavier the closer it gets to Mordor, and its whispers grow louder. At Mount Doom, its birthplace, its will becomes nearly irresistible.
A simple gold band, slightly too warm to the touch, that seems to gleam with its own inner light. When heated, fiery Tengwar script appears on its surface in the Black Speech: 'One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them.' It never tarnishes, never scratches, and is always perfectly, impossibly smooth. It seems to change size subtly, fitting whatever finger it is on — or slipping off when it wishes to be found by someone else.
Also known as: the One Ring, the Ring, the Ruling Ring, Isildur's Bane, the Precious, my precious