Ancient core

Ancient core is a rare gem in Crystal Idle. Obtained from Gravel crusher (4%), Magma behemoth (4%), Crystal colossus (4%) and 4 more. Used in 6 recipes, e.g. Damage Mixture.
The magical heart ripped from a destroyed golem. Radiates faint heat. Sought by enchanters.

Type: GemRarity: RareSells to the shop for 95 gold

How to get

Dropped by

Source	Skill	Level	Chance	Qty
Shale golem	Combat	20	3.5%	1
Gravel crusher	Combat	20	4%	1
Steel sentinel	Combat	40	3.5%	1
Gilded automaton	Combat	40	3.5%	1
Magma behemoth	Combat	50	4%	1
Crystal colossus	Combat	70	4%	1-2
Eldritch guardian	Combat	80	4%	1-2

Used in

Result	Skill	Level	Qty
Damage Mixture	Alchemy	25	1
Luck Mixture	Alchemy	35	1
Greater Damage Mixture	Alchemy	54	2
Greater Luck Mixture	Alchemy	65	1
Elixir of Wrath	Alchemy	81	2
Supreme Luck Mixture	Alchemy	89	2

Same type: Gem

Unawakened Crystal (unawakened_crystal@star)CrystalsPearl FragmentMana CrystalRaw CrystalAncient CoinDense CoreSoul of the HuntGolden ScaleEnergy CoreUnawakened Crystal (unawakened_crystal@acrobatics)Unawakened Crystal (unawakened_crystal@fishing)Unawakened Crystal (unawakened_crystal@hunting)Unawakened Crystal (unawakened_crystal@mining)Unawakened Crystal (unawakened_crystal@thieving)Unawakened Crystal (unawakened_crystal@weaving)Unawakened Crystal (unawakened_crystal@woodcutting)Ancient RelicAncient Fragment

Data generated from the game code, version 3.7.0 (2026-11-01).