'The Lord of the Rings: The Rings of Power' reveals mithril's origin story

Consider me thrilled.
 By 
Belen Edwards
 on 
All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission.
Durin, a red-bearded dwarf in armor, stands in a great hall of dwavres with his fist raised.
What lies in the darkness of Khazad-dûm? Credit: Courtesy of Prime Video

Episode 4 of The Lord of the Rings: The Rings of Power finally reveals what the dwarves of Khazad-dûm have been mining in secret: mithril!

A precious metal invented by J.R.R. Tolkien for his novels, mithril is both incredibly light and impossibly strong. Plus, its beauty never fades. If it sounds familiar, that's because mithril plays a key role in the Third Age of Middle-earth. Thorin gifts Bilbo a shirt of mithril mail in The Hobbit, which Bilbo then gifts in turn to Frodo in The Fellowship of the Ring. That shirt saves Frodo's life during combat; without mithril, he would have been a total goner. However, that's all Third Age business. The Rings of Power takes place during the Second Age of Middle-earth, so we get to see how the world reacts to the first discovery of such a precious ore.

How does mithril fit into The Rings of Power?

Elrond, an elf in a grey robe, and Durin, a red-bearded dwarf in brown armor, face each other in a mine.
Let's talk mithril. Credit: Credit: Ben Rothstein/Prime Video

While visiting Khazad-dûm, Elrond (Robert Aramayo) finds that Prince Durin (Owain Arthur) and the dwarves have been covertly mining a newly discovered substance. In the dwarven tongue, the name for the metal means "grey glitter." When translated to Sindarin, you get the Elven word "mithril."


You May Also Like

Durin tells Elrond that Princess Disa (Sophia Nomvete) was the first to detect mithril. Upon learning of its lightness and durability, Durin reckons that it could be the start of a new era for the dwarves. Unfortunately, mithril proves dangerous to mine, and his father would rather exercise caution than launch full-speed ahead into a mining endeavor.

Want more about the latest in entertainment? Sign up for Mashable's Top Stories newsletter today.

If you're familiar with Middle-earth history, you'll know that the mining proceeds anyway, lasting all the way into the Third Age. The dwarves delve too greedily and too deep in their search for mithril, awakening a terrible Balrog and forcing them to abandon Khazad-dûm for good. This Balrog is the very same being that the Fellowship of the Ring encounters in the Mines of Moria.

Since much of The Rings of Power takes liberties with Tolkien's work, it's safe to say that this origin story for mithril is a new invention for the show. However, Tolkien didn't write much about the finding of mithril at all. In Appendix B of The Lord of the Rings, he mentions that elves moved to Eregion when they learned of the dwarves' discovery of mithril in Moria, but that's about it.

The Rings of Power has taken some liberties with this information, as Eregion is already established by the time the dwarves have found mithril. Still, this change opens up some interesting narrative possibilities for the future. Elrond swore to Durin that he would keep mithril a secret — will his loyalty to the elves be tested against his friendship to Durin? Will mithril be another point of tension between the dwarves and the elves?

Most pressingly: What does the emphasis on mithril mean for the actual forging of the Rings of Power? Based on the name of the show, we know the creation of the Rings of Power (including the One Ring) will play a large part in this series. Perhaps mithril will figure more largely into the actual forging of the rings.

In Tolkien's work, only one of the rings — Nenya, the ring worn by Galadriel – is explicitly described as being made of mithril. However, given the lack of detail about some of the other rings and The Rings of Power's tendency to diverge from what's on the page, I wouldn't be surprised if more of the Rings of Power got the mithril treatment moving forward.

The Lord of the Rings: The Rings of Power is now streaming on Prime Video. New episodes release every Friday at 12 a.m. ET.

A woman in a white sweater with shoulder-length brown hair.
Belen Edwards
Entertainment Reporter

Belen Edwards is an Entertainment Reporter at Mashable. She covers movies and TV with a focus on fantasy and science fiction, adaptations, animation, and more nerdy goodness. She is a member of the Critics Choice Association and the Television Critics Association, as well as a Tomatometer-approved critic.

Mashable Potato

Recommended For You

Stay prepared with $600 off the DJI Power 2000 Portable Power Station
DJI Power 2000 Portable Power Station on green abstract background

Gear up for winter with the DJI Power 2000 portable power station while it's $500 off
the DJI power 2000 portable power station on a pink, coral, and blue colored background

The DJI Power 2000 power station has never been cheaper at Amazon — save $600 right now
dji power 2000 portable power station against an orange and blue patterned background


More in Entertainment
How to watch Chelsea vs. Port Vale online for free
Alejandro Garnacho of Chelsea reacts

How to watch 'Wuthering Heights' at home: Margot Robbie and Jacob Elordi's controversial romance now streaming
Margot Robbie and Jacob Elordi embracing in still from "Wuthering Heights"

How to watch New York Islanders vs. Philadelphia Flyers online for free
Matthew Schaefer of the New York Islanders warms up

How to watch Mexico vs. Belgium online for free
Israel Reyes of Mexico reacts

How to watch Brazil vs. Croatia online for free
Vinicius Junior #10 of Brazil leaves

Trending on Mashable
NYT Connections hints today: Clues, answers for April 3, 2026
Connections game on a smartphone

Wordle today: Answer, hints for April 3, 2026
Wordle game on a smartphone

NYT Connections hints today: Clues, answers for April 2, 2026
Connections game on a smartphone


What's new to streaming this week? (April 3, 2026)
A composite of images from film and TV streaming this week.
The biggest stories of the day delivered to your inbox.
These newsletters may contain advertising, deals, or affiliate links. By clicking Subscribe, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy.
Thanks for signing up. See you at your inbox!