Red Gems are a resource introduced in Aberration and also available on Valguero, Genesis: Part 1, Crystal Isles, Genesis: Part 2, Lost Island, and Fjordur. They are used for crafting various items.
Category:Crafted with Red Gem or Red Crystalized Sap - ARK: Survival Evolved Wiki
The Chasm - ARK Official Community Wiki
Gasoline - ARK: Survival Evolved Wiki
Terrarium (Genesis: Part 1) - ARK: Survival Evolved Wiki
Belluasaurus, Additional Creatures Wiki
Red Gem, Don't Starve Wiki
Susecdurus, Additional Creatures Wiki
Halls of the Reaper Queen (Aberration) - ARK: Survival Evolved Wiki
ark lost island resource map –