In Core Keeper, the Ancient Gemstone is a rare ore that holds many opportunities. It’s one of the main crafting ingredients for many recipes, including boss-summoning items. So, ensure that you have a surplus of this valuable resource with our guide below!

How to Get Ancient Gemstone in Core Keeper

Core Keeper players can farm Ancient Gemstones from various sources. For instance, purchase this material from the Cloaked Merchant for 55x Ancient Coin. However, this item only appears in that merchant NPC's wares after activating The Core. Alternatively, Ancient Gemstone can be obtained through other means, such as defeating specific monsters, opening chests, and fishing in lava. You can find other sources for Ancient Gemstone in Core Keeper below:

Dropped from the Following

• Ancient Crate
• Atlantean Worm
• Awakened Azeos
• Azeos the Sky Titan
• Bearded Merchant
• Blue Slime
• Brave Merchant
• Caveling Assassin
• Caveling Brute
• Caveling Hunter
• Caveling Mummy
• Caveling Scholar
• Caveling Shaman
• Caveling
• Charred Crate
• Cloaked Merchant
• Core Commander
• Core Sentry
• Crydra the Ice Titan
• Desert Flower Vessel
• Druidra the Wild Titan
• Fallen Rock
• Fishing Merchant
• Flower Vessel
• Ghorm the Devourer
• Glurch the Abominous Mass
• Haunted Hive Mother
• Igneous the Molten Mass
• Ivy the Poisonous Mass
• Large Alien Tech Destructible
• Large Ancient Crate
• Large Charred Crate
• Large Desert Flower Vessel
• Large Flower Vessel
• Large Fossil Cluster
• Large Metropolis Crate
• Large Oasis Flower Vessel
• Large Overgrown Wooden Crate
• Large Poison Slime Vessel
• Large Slime Vessel
• Large Sun Crystal
• Large Temple Crate
• Large Wooden Crate
• Lava Slime
• Malugaz the Corrupted
• Medium Poison Slime Vessel
• Medium Slime Vessel
• Metropolis Crate
• Mimite
• Morpha the Aquatic Mass
• Nimruza, Queen of the Burrowed Sands
• Oasis Flower Vessel
• Omoroth the Sea Titan
• Orange Slime
• Orbital Turret
• Overgrown Wooden Crate
• Purple Slime
• Pyrdra the Fire Titan
• Ra-Akar the Sand Titan
• Red Slime
• Shrooman Brute
• Shrooman
• Small Poison Slime Vessel
• Small Slime Vessel
• Sun Crystal
• Temple Crate
• The Hive Mother
• Wooden Crate

Containers

• Ancient Chest
• Blue Glass Pedestal
• Broken Cryo Pod
• Chest
• Cultist Chest
• Damaged Cryo Pod
• Golden Ancient Chest
• Iron Chest
• Mold Covered Chest
• Seashell Chest
• Stone Pedestal
• Titan's Chest
• Titan's Chest

Salvaging

• Ancient Gem Necklace
• Ancient Gem Ring
• Ancient Pickaxe
• Arcane Staff
• Blue Leather Tome
• Conch Shell Necklace
• Crescent Necklace
• Crydra's Ring
• Crystal Shard Club
• Druidra's Ring
• Gemstone Garment
• Gemstone Harem Pants
• Glass Bead Necklace
• Hydra Bone Shield
• Moonstone
• Oceanheart Necklace
• Octarine Necklace
• Octarine Ring
• Omoroth's Chestplate
• Omoroth's Helm
• Omoroth's Leg Armor
• Polished Octarine Necklace
• Polished Octarine Ring
• Polished Swift Ring
• Pyrdra's Necklace
• Ricochet Shuriken
• Rift Lens
• Ritual Dagger
• Scholar Backpack
• Scholar's Staff
• Scorching Aegis
• Sentry Shield
• Soul Medallion
• Sun Caller
• Swift Ring
• Tome of the Dead
• Tome of the Deep
• Tower Shell Necklace
• Turtle Shell
• Void Gun

Uses for Ancient Gemstone in Core Keeper: Recipes & Requirements

Players can use the Core Keeper Ancient Gemstone for various crafting recipes, which you can find below:

Ancient Hologram Pod

• Atlantean Worm Scanner: 15x Ancient Gemstone, 15x Mechanical Part, and 30x Solarite Bar
• Azeos the Sky Titan Scanner: 10x Ancient Gemstone and 10x Mechanical Part
• Crydra the Ice Titan Scanner: 10x Ancient Gemstone, 10x Mechanical Part, 10x Octarine Bar, and 3x Radiation Crystal
• Druidra the Wild Titan Scanner: 10x Ancient Gemstone, 10x Mechanical Part, 10x Scarlet Bar, and 3x Radiation Crystal
• Expert Lure: 1x Purple Bait, 20x Spicy Bait, 20x Sweet Bait, 20x Glowing Bait, 20x Octarine Bar, and 10x Ancient Gemstone
• Hive Mother Scanner: 5x Ancient Gemstone and 5x Mechanical Part
• Igneous the Molten Mass Scanner: 10x Ancient Gemstone, 10x Mechanical Part, and 40x Magma Slime
• Ivy the Poisonous Mass Scanner: 8x Ancient Gemstone, 8x Mechanical Part, and 40x Poison Slime
• Large Shiny Glimmering Object: 5x Copper Bar, 5x Iron Bar, 5x Scarlet Bar, 5x Gold Bar, and 3x Ancient Gemstone
• Morpha the Aquatic Mass Scanner: 10x Ancient Gemstone, 10x Mechanical Part, and 40x Slippery Slime
• Omoroth the Sea Titan Scanner: 10x Ancient Gemstone, 10x Mechanical Part, and 10x Sea Shell
• Pyrdra the Fire Titan Scanner: 10x Ancient Gemstone, 10x Mechanical Part, 10x Galaxite Bar, and 3x Radiation Crystal
• Ra-Akar the Sand Titan Scanner: 20x Ancient Gemstone, 20x Mechanical Part, and 20x Scarab Wingcover
• Thumper: 40x Fiber, 40x Plank, 20x Scarlet Bar, 20x Galaxite Bar, 10x Mechanical Part, and 20x Ancient Gemstone

Cipher Parchment

• Soul Seeker: 1x Ancient Pickaxe, 400x Gold Bar, 800x Scarlet Bar, 800x Octarine Bar, 800x Galaxite Bar, and 100x Ancient Gemstone

Ghorm Statue

• Recall Idol: 1x Ancient Gemstone and 1x Mechanical Part

Glurch Statue

• Ghorm the Devourer Scanner: 3x Ancient Gemstone and 3x Mechanical Part
• Malugaz the Corrupted Scanner: 5x Ancient Gemstone and 5x Mechanical Part

Glyph Parchment

• Phantom Spark: 1x Channeling Gemstone, 1x Fractured Limbs, 1x Energy String, 100x Octarine Bar, and 20x Ancient Gemstone

Jewelry Workbench

• Gold Crystal Necklace: 10x Gold Bar and 1x Ancient Gemstone
• Gold Crystal Ring: 8x Gold Bar and 1x Ancient Gemstone
• Swift Ring: 12x Iron Bar and 3x Ancient Gemstone

Laboratory Table

• Guardian's Potion: 1x Slipper Slime, 1x Puffungi, and 1x Ancient Gemstone

Malugaz Statue

• Ancient Hologram Pod: 5x Ancient Gemstone and 5x Mechanical Part
• Blue Leather Tome: 8x Ancient Gemstone and 8x Fiber
• Ritual Dagger: 15x Iron Bar and 3x Ancient Gemstone

Octarine Workbench

• Portal: 100x Copper Bar, 100x Iron Bar, 100x Octarine Bar, 200x Coral Wood Plank, 20x Mechanical Part, and 30x Ancient Gemstone

Proficient Jewelry Workbench

• Octarine Necklace: 30x Octarine Bar and 5x Ancient Gemstone
• Octarine Ring: 20x Octarine Bar and 5x Ancient Gemstone

Rift Statue

• Nimruza, Queen of the Burrowed Sands Scanner (Added in the Bags & Blasts Update): 20x Ancient Gemstone, 20x Mechanical Part, and 20x Cytoplasm
• Primeval Slime Cell: 40x Cytoplasm and 30x Ancient Gemstone
• Urschleim Scanner: 20x Ancient Gemstone, 20x Mechanical Part, and 20x Cytoplasm

Rune Parchment

• Rune Song: 1x Broken Handle, 1x Chipped Blade, 1x Clear Gemstone, 50x Iron Bar, and 10x Ancient Gemstone

Solarite Workbench

• Hydra Altar: 1x Giant Bug Brain, 15x Ancient Gemstone, 15x Solarite Bar, and 20x Galaxite Bar

Tip: Farming the Ancient Gemstone in Core Keeper can be easier by lowering the difficulty on the server, which you can achieve by following the steps mentioned in the video below: