Moonstone is a Level 45 crafting material that only turns up in Cinder’s Cradle, the lava-and-floating-islands region added to the north of Embervale in the 1.0 update. You cannot cut it from ordinary rock. It comes from the metal left behind by the Ancients, which means you harvest it from machine-built structures and the mechanical enemies that guard them.
Quick answer: Reach Cinder’s Cradle north of the Ancient Gate, then break the metallic urns with a pickaxe or kill the large automaton constructs. Each large automaton drops about 5 Moonstone.
Where Moonstone is found in Cinder’s Cradle
Moonstone sits in the volcanic region directly north of the water biome. On the map, head up past Starfish Shores, Cromville Hot Spring, and the Ancient Gate. Everything above the Ancient Gate is Cinder’s Cradle, the area that stayed locked behind closed gates through all of Early Access.

You need enough Flame progression to open and survive the region. Access opens around Flame level 10, with level 11 unlocking after you beat the final boss. If your Flame level is too low, you will not be able to step into the area safely, so upgrade your altar first.
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Add to Google Preferences →Method 1: Mine the metallic urns with a pickaxe
The low-risk route is mining. Metallic urns and vat containers stand along the roadsides and around ruined structures throughout Cinder’s Cradle. Hit them with a pickaxe and they break open into mining loot.

Method 2: Kill the large automaton constructs
For larger stacks at once, fight the big mechanical automatons that guard the lava areas. These are the constructs stationed at chokepoints such as bridges, and they hold more Moonstone than any single urn.


Do not waste time on the small mechanical spider-like minions for this material. They only drop Gold Ore and Archaic Shards, never Moonstone.
Moonstone material reference
Moonstone is a Common material despite being locked behind a late-game region. Here are the exact figures for Moonstone and the materials that drop alongside it, so you know what each stack is worth while you farm.
| Material | Level | Rarity | Source |
|---|---|---|---|
| 45 | Common | Cinder’s Cradle | |
| 45 | Common | Cinder’s Cradle, Ancient Constructs | |
| 45 | Common | Cinder’s Cradle |
Every stack of Moonstone holds up to 250. It carries no special drawbacks and shares the Level 45 bracket with the other Cinder’s Cradle materials, so one farming run usually fills several recipes at once.
What Moonstone is used for
Moonstone is mostly a crafting ingredient rather than a finished item. Its main refinement is Moonstone Dust, ground at the Mill. One Moonstone produces one Moonstone Dust, and the Mill recipe runs for 180.

Moonstone Dust then feeds into higher-tier recipes. The Infusion Altar, for example, takes 1 Moonstone Dust together with 30 Basalt, 10 Gold Dust, 5 Celestium Bars, and 1 Diamond Dust. Moonstone is also one of the three ingredients that go into Sparkling Dust at the Mill, combined with the materials ground from Diamond and Mother-Of-Pearl.
You cannot grind Moonstone until you have picked up at least one. The Moonstone Dust recipe is learned the first time Moonstone enters your inventory, so make your first trip to Cinder’s Cradle before expecting the Mill option to appear.
How to confirm you have it
Open your backpack and look for Moonstone listed as a Level 45 Common material. If it shows up there, the pickup worked, and the Mill will now offer Moonstone Dust under its available outputs. From that point, queue the grind at the Mill and the dust will start producing as long as you keep Moonstone in stock.



