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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.
Gems are found in the following forms;
- Embedded within Stone Blocks, as Gemstone Blocks.
- In placed form on blocks underground, including sometimes in Underground Cabins, rarely in the Dungeon, and
Amber in the Underground Desert. - As gem stashes, which are breakable background objects (similar to Coin Stashes), each resembling a rock with gems protruding.
- As a drop from a thrown Geode.
- As a drop from a fully-grown Gemcorn tree.
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.
On the 
version, mining gems also has a chance of yielding a Broken Heart during Valentine's Day.
Types[edit | edit source]
In descending order of rarity and value (rarest at the top):
| Gem | Value | In Stone | Stash | Placed |
|---|---|---|---|---|
 AmberInternal Item ID: 999
|
|
n/a[1] | n/a[1] | 
|
 DiamondInternal Item ID: 182
|
|
|
|
|
 RubyInternal Item ID: 178
|
50 
|
|
|
|
 EmeraldInternal Item ID: 179
|
|
|
|
|
 SapphireInternal Item ID: 177
|
25
|
|
|
|
 TopazInternal Item ID: 180
|
50
|
|
|
|
 AmethystInternal Item ID: 181
|
75
|
|
|
|
Crafting[edit | edit source]
Used in[edit | edit source]
Gemstone cave[edit | edit source]
A gemstone cave is a rare, irregularly shaped room often found in the cavern layer. It contains a high concentration of placed gems on multiple stone surfaces, as well as a few gems embedded in stone. Most gemstone caves contain one or two types of gemstone, but can rarely contain three or more types. The type of gem found in such caves is easily identifiable by the Gem Wall the cave utilizes, but this wall cannot be collected to obtain any items.
Notes[edit | edit source]
- Caves with Dirt Walls are considered to be within the surface layer and will not contain gems.
- Gem rarity is not affected by depth; there are as many gems just below the surface as near The Underworld.
- Gems are less common in the Underground Jungle. Regular non-Jungle underground biomes contain much greater quantities.
- Making Stained Glass is the most profitable way to sell gems (except on
Mobile where it is much less valuable).
Trivia[edit | edit source]
- The stats of the staffs made from gems are directly related to the value of the gemstone being implemented, with the diamond staff having a higher damage than the amethyst staff.
- Amber is an exception, being weaker than ruby staffs.
- In real life, some gemstones and minerals have been used as a dye, with azurite and cinnabar being especially the case. This could be interpreted as the colored robes found in the crafting menu.
Gallery[edit | edit source]
Diamond embedded in Stone
Ruby embedded in Stone
Emerald embedded in Stone
Sapphire embedded in Stone
Topaz embedded in Stone
Amethyst embedded in Stone
History[edit | edit source]
- Desktop 1.4.0.1:
- Gemcorns can now be crafted.
- Gemstone Blocks can now be crafted.
- Desktop 1.3.1: Inventory, placed, rock and stone sprites updated.
- Large Amber can now be crafted.
- Gem Locks can now be crafted.
- Desktop 1.3.0.1: Amber Staff can now be crafted.
- Desktop 1.2.3: Can now be crafted into Gemspark Blocks.
- Desktop 1.2:
- Amber added (and the amber Orange Torch).
- Sprites changed.
- Can now be found as crystals on cave walls and in Gemstone caves.
- The original 6 gems can now be crafted into Large Gems, Gem Grappling hooks, and early-game magic robes and Gem Staffs.
- Sapphire, Ruby, Emerald, Topaz, and Amethyst can be crafted into Stained Glass.
- Stack limit increased from 99 to 999.
- Can now be placed.
- Desktop 1.1: Can now be used to craft colored torches.
- Desktop-Release: Introduced Sapphire, Ruby, Emerald, Topaz, Amethyst, and Diamond.
- Can be crafted into colorful Phaseblades.
Footnotes[edit | edit source]
- ↑ 1.0 1.1 Before 1.4, Amber could not be mined naturally. It could only be obtained from an Extractinator. It can appear in placed form when placed manually by players, but was never found placed naturally until 1.4.0.1 in the underground desert.
- Gem items
- Desktop content
- Console content
- Old-gen console content
- Mobile content
- 3DS content
- Items of rarity 0
- Recipes table with unexcepted total number of rows
- Craftable items
- Furnace
- By Hand
- Iron or Lead Anvil
- Sawmill
- Placed Bottle or Alchemy Table
- Work Bench
- Heavy Work Bench
- Heavy Work Bench and Ecto Mist
- Loom
- Treasure Rooms
