Materials Uncommon

Calcified Shell石灰化した貝

A composite material of calcite and fossilized seashells.

In-game description
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What is Calcified Shell? Features and uses

Calcified Shell is an uncommon item in Core Keeper (Materials). It can be obtained from Fossil Cluster, Large Fossil Cluster, Urschleim. It is an ingredient in 5 recipes.

Calcified Shell key points (from the game data)

  • Best source: Fossil Cluster — 75% chance per roll.
  • Sells to merchants for 6 Ancient Coins.

Calculated and summarized by this site from the game data (1.3.0.6).

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What is Calcified Shell used to make? Craftable items and their uses

Items you can make with Calcified Shell, with how to craft them, the other materials needed and what the result is for.

Passage TerrariumPassage Terrarium

How to craft
Crafted at Glass Workbench
Materials
Glass Piece ×4, Calcified Shell ×4, Small Purple Feather Tree ×1, Small Cyan Feather Tree ×1
What it is
Placeables & furniture. "A cold enclosure for the creepiest of critters."

Passage AquariumPassage Aquarium

How to craft
Crafted at Glass Workbench
Materials
Glass Piece ×4, Calcified Shell ×4, Tall Barnacle Grass ×1, Barnacle Grass ×1
What it is
Placeables & furniture. "A gloomy tank full of strange fossils."

Grimy Stone PillarGrimy Stone Pillar

How to craft
Crafted at Rift Statue
Materials
Stone Block ×10, Calcified Shell ×1, Cytoplasm ×1
What it is
Placeables & furniture. "This sullied pillar is covered in intricate... monstrous carvings."

Grimy Stone FloorGrimy Stone Floor

How to craft
Crafted at Rift Statue
Materials
Stone Block ×1, Calcified Shell ×1
What it is
Placeables & furniture. "A floor made of dark, grimy stone bricks."

Stone LanternStone Lantern

How to craft
Crafted at Rift Statue
Materials
Stone Block ×5, Calcified Shell ×1, Calcified Shell ×1
What it is
Placeables & furniture. "An unknown light source sits inside this solid stone cage. The air around it feels cold."
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How to get Calcified Shell (Boss drop, Breakable objects)

Boss drop (1) Breakable objects (2)

SourceTypeBiomeAmountChance
Urschleim Boss drop — 1–4 53.2%
Fossil Cluster Breakable objects The Passage 1 75%
Large Fossil Cluster Breakable objects The Passage 2–3 70.8%

"Chance" is the chance to get at least one of this item per try (opening one chest, defeating one enemy, one catch). A "guaranteed group" is the group of a chest or boss from which exactly one item always drops; it does not mean this item always drops (the chance of it being picked from that group is shown in small text). Only items that always drop are marked "Guaranteed". Fishing means catches with a fishing rod, separate from enemy and boss drops. Calculated from the game's drop tables (Conf/Loot, 1.3.0.6) the same way the game rolls them.

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How to get Calcified Shell (salvaging): 3 items give it

Salvaging any of these items at the Salvage and Repair Station gives Calcified Shell (gear is listed from the lowest level). Salvaging gear or tools you no longer need returns part of their materials.

Amounts are calculated from the game data (materials, durability and level in the 1.3.0.6 prefabs) the same way the game's salvaging works; the range is from 0 to full durability. All items that can be salvaged are listed in salvaging.

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What Calcified Shell is used for (5 recipes)