PARTICIPANT IN A RANKED completed JAM
The crafting jam II

Data Packs Other

Expensive Diamonds

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Compatibility
Minecraft 1.14
to version
Minecraft 1.21
Changes include
  • Recipes
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ScotsMiser
Lvl 71Legendary Miner
433
Done for
The crafting jam II
08Mar2026 – 08April2026



Makes diamonds renewable via a two step process:

In the first step, a Basilisk Egg [​a renamed & retextured chicken_spawn_egg] is crafted from a block of coal surounded by eight blocks of iron.
In the second step, the Basilisk Egg is blasted [​smelted in a Blast Furnace] to produce a diamond – this takes 13 minutes.

The Basilisk Egg can still be thrown to produce a chicken, but the cost is intended to be high enough compared to a series of standard survial eggs that the item not be disruptive.

The Basilisk Egg texture and renaming require the Expensive Diamonds RESOURCEpack.
N.B. Unfortunately, spawn eggs were not given individual textures until 1.21.5, so the new Basilisk Egg sprite will not appear when used in earlier versions.
The pack functions properly (including the renaming), but shows the vanilla chicken_spawn_egg.
List of languages in which renaming has been done:
English – several variants including pirate, upside-down, Anglish, & Shakespearean
French – France & Canada's versions
Latin
Scots Gaelic.

Changes to the JSON format that were made in 1.17 also force the separate DATApacks for 1.14-1.16 and 1.17 forward.
The same Expensive Diamonds RESOURCEpack works across all versions.
(NOTE: the RESOURCEpack is in the versions block of the main Modrinth link)



Art Note: the main artwork is reworked from an 1806 illustraion of a Basilisk by Friedrich Johann Justin Bertuch
Tech note: The process used was inspired by one of the early methods for producing lab-grown diamonds [​IRL]

ESALIF

Expensive Diamonds Minecraft Data Pack

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  Have something to say?

G4B8O
04/01/2026 8:01 am
Level 10 : Journeyman Miner
players in survival can use the chicken spawn egg on spawner so then the cost of the infinite chickens is just few iron blocks witch compared to cost of just 1 chicken for same price is a little underestimated
2
ScotsMiser
04/01/2026 1:06 pm
Level 71 : Legendary Miner
However, that would mean sacrificing the original mob spawning.

One can get infinite chickens with very little redstone already — any of the many "chickenator" designs minus the kill mechanism.
These also generate chickens whenever the blocks are in entity ticking chunks (rather than the player needing to be within 16 of the spawner.)
2

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