Collect and insert Diablo 4 gems into your weapons, armor, and jewelry to Diablo 4 Items give yourself extra buffs and stat boosts that further perfect your build. These gem buffs can be really useful too, ranging from increased Basic Skill damage to gaining health with kills and improved elemental resistances. However, with seven gem types, each offering three different Diablo 4 buffs, and five different gem qualities changing the strength of these buffs, it can be tricky to keep track of all these gems and know which ones are best. Here's a full breakdown of all the Diablo 4 gems, how to find and socket gems in Diablo 4, and how to unlock Jewelers and use their services.

All Diablo 4 gems and how to get them

(Image credit: Blizzard Entertainment)
Gems in Diablo 4 are random loot drops that start appearing around Level 15. That means you can get them by defeating enemies, opening chests, and generally interacting with or smashing up objects around Sanctuary. There are seven gem types that you can collect and store in your inventory in Diablo 4. Each one offers a different benefit depending on whether you socket them into a weapon, armor piece, or jewelry item – more on socketing gems further down. Here are the seven gem types and the buffs they offer:

Swipe to scroll horizontallyGemWeapon socket effectArmor socket effectJewelry socket effectAmethystIncreases damage of your damage over time effectsReduces damage taken from enemy damage over time effectsIncreases Shadow resistanceDiamondIncreases Ultimate Skill damageIncreases Barrier generationIncreases resistance to all elementsEmeraldIncreases Critical Strike damage to Vulnerable enemiesAdds ThornsIncreases Poison resistanceRubyIncreases Overpower damageIncreasese maximum healthIncreases Fire resistanceSapphireIncreases Critical Strike damage to crowd controlled enemiesIncreases damage reduction while FortifiedIncreases Cold resistanceSkullGain health with each killIncreases healing receivedAdds Armor therefore increasing resistance to all damage, primarily Physical damage and Bleed damage over time.TopazIncreases Basic Skill damageReduces damage taken while affected by crowd control effectsIncreases Lightning resistance
As well as the seven Diablo 4 gem types, there are also five different gem qualities which determine the potency of the buffs they provide with superior gems offering much better buffs. From worst to best, these are:

Diablo 4 player trading re-enabled as Diablo IV Items Blizzard stamps out gold duplication exploit | MMOEXP