According to the wiki page, adventurers can exchange the gems they collect in the dungeon for money.

Magic stones are crystal-like stones that are dropped by monsters. The stones can be exchanged at the Guild for valis (Orario currency).

The bigger the stone, the more valis it is worth.

I was wondering, why does the Guild want these crystals? Do they have a use?


  • 1
    Would you please leave the question unaccepted for some time? Accepting the answer in such a short time may discourage people from adding new answer. – nhahtdh Jun 5 '15 at 13:32
  • @nhahtdh Sure thing :) – Alagaros Jun 5 '15 at 13:45

According to ja.Wikipedia:



Magic Stones are the core of the monsters' life force, and adventurers' means of living. Without exception, it locates in the monster's chest.

Killing the monsters, gouging the Magic Stones out of their chests (in the anime, the body of the monsters disappear when defeated, leaving their Magic Stones behind), and cashing them in at the guild is the main source of income of the adventurers.

Charged with magic, Magic Stones can be used to create various tools, such as lighting, sewage purification, cooking stove, refrigerator, etc.

Monsters die an instant death if the Magic Stone in their chest is destroyed by a direct attack.

DanMachi Wiki has a bit more details regarding the use of Magic Stones:


  • Magic Stone Lamp: A handy and flexible use of the Magic Stone is the production of Magic Stone Lamps. These items give off a dim shine that allows one to see underground or in total darkness. It was once considered as the "century's greatest invention."
  • Ignition Device: Magic Stones can be used to produce ignition devices.
  • Freezer: Magic Stones are used in the production of freezers to preserve food.

Volume 1, Chapter 2 is cited as the source of the information above.


Yes, they use it to create potions or armors, weapons and/or anything it can be made out of.

Note that both shards and drop items (monster parts) can be used for crafting. Drop items not necessarily lead to magic items.

In episode 9 entitled "Blacksmith (Welf Crozzo)", Bell meet Welf Crozzo and at the end of this episode, Welf made Bell a weapon crafted from the horn dropped by the Minotaur he had killed on previous episode.
Since Crozzo is reluctant to craft magic items, the weapon he crafted from the minotaur' horn is not a magical item.

Additionally, from Wikipedia

Adventurers visit the dungeon to defeat monsters and take their shards, which are used to craft magic items.

  • You can clearify your answer by adding a spoiler to your answer with the spoiler notaiton – Alagaros Jun 5 '15 at 7:55
  • @Alagaros i think its not working? the spoiler tag i mean. I already eddited it with spoiler tag :( – name me Jun 5 '15 at 8:10
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    I am pretty sure it wasn't the shard that dropped but the Minotaur's horn. – Alagaros Jun 5 '15 at 8:27
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    but even if you say all that, it still is a minotaur horn and not a crystal like the one in the question, also what bell means by it being too precious to him is that it has sentimental value for him as he was almost killed by a minotaur in one of the previous episodes, so he thought of it as something that proved he overcame his previous weakness and fear. – Jordy Kramer Jun 5 '15 at 8:52
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    Crozzo calls the horn a "Drop item". In ep 2 it is shown that monsters can drop shards or items. Shards are appraised on their size/purity, not the monster they are from. The minotaur horn is not a shard, since it is still regarded as part of the monster defeated. – Mindwin Jun 5 '15 at 16:50

basically they act as power sources like batteries mainly. bigger ones are worth more because they can be used for longer and contain more power. for example when watching an episode look at the lamps there isn't a candle in there, it is a magic stone.

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