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Amethyst.png Topaz.png Sapphire.png Emerald.png Ruby.png Diamond.png Amber.png
Type Gem
Max stack 999
A Gemstone Cave, where higher concentrations of Gems can be found. Most of these Gems are in placed form, while a few are embedded in Stone.

Gems are valuable crafting materials found underground. There are currently 7 Gem types. Gems can also be placed on any side of a block after being mined. They are found in any Underground layer, except for the Underworld.

With the exception of Amber (which requires an Extractinator instead), Gems are found in the following forms, all of which drop Gem items when mined:

  • Embedded within Stone blocks.
  • In placed form on blocks underground, including sometimes in Underground Cabins, or rarely in the Dungeon.
  • As gem stashes, which are breakable background objects (similar to Coin Stashes), each resembling a rock with gems protruding.

Gems can also be found in higher concentrations in rare Gemstone Caves, which can contain multiple Gem types lining and embedded within their stone blocks. Gemstone Caves have their own unique background wall that cannot currently be collected or used by players.


In descending order of rarity and value (rarest at the top):

Gem Value In Stone Stash Placed
Amber.png Amber 30 Silver Coin n/a* n/a* Amber placed.png
Diamond.png Diamond 30 Silver Coin
Diamond stone.png
Diamond rock.png Diamond placed.png
Ruby.png Ruby 22 Silver Coin 50 Copper Coin
Ruby stone.png
Ruby rock.png Ruby placed.png
Emerald.png Emerald 15 Silver Coin
Emerald stone.png
Emerald rock.png Emerald placed.png
Sapphire.png Sapphire 11 Silver Coin 25 Copper Coin
Sapphire stone.png
Sapphire rock.png Sapphire placed.png
Topaz.png Topaz 7 Silver Coin 50 Copper Coin
Topaz stone.png
Topaz rock.png Topaz placed.png
Amethyst.png Amethyst 3 Silver Coin 75 Copper Coin
Amethyst stone.png
Amethyst rock.png Amethyst placed.png
  • *Amber is not mined. It can only be obtained from an Extractinator. It can only appear in placed form when placed manually by players, and is never found placed naturally.


Gems can be sold to NPCs as a good pre-Hardmode source of coins. Additionally:

All gems:

All gems except Amber:

Other recipes:


  • Making Stained Glass is the most profitable way to sell gems. (Except on mobile where it's less valuable.)


  • Caves with Dirt background walls are considered to be within the Surface layer and will not contain Gems.
  • Gem rarity is not affected by depth; you will find just as many Gems just below the Surface as you would near the Underworld.
  • Gems are more common in the Underground Jungle.



  • 1.2.3: Can now be crafted into Gemspark Blocks.
  • 1.2:
    • Amber introduced.
    • Appearance changed.
    • Can now be found as crystals on cave walls and in Gemstone caves.
    • Can now be used to craft Gem Grappling hooks.
    • Stack limit increased from 99 to 999.
    • Can now be placed.
  • 1.1: Can now be used to craft colored torches.
Amethyst.png Amethyst • Topaz.png Topaz • Sapphire.png Sapphire • Emerald.png Emerald • Ruby.png Ruby • Diamond.png Diamond • Amber.png Amber
Consumables: Healing Potion.png Potions ( Inferno Potion.png Buff Potions) • Shuriken.png Consumable Weapons

High Velocity Bullet.png Ammunition • Jungle Grass Seeds.png Seeds • Fallen Star.png Materials ( Feather.png Drops • Copper Ore.png Ores • Iron Bar.png Bars) • Silver Coin.png Other
Tiles: Stone Block.png Blocks ( Red Brick.png Bricks) • Wood Wall.png Walls ( Cobalt Brick Wall.png Brick Walls)