What do Diablo 4 gems do? These useful items can be applied to your gear to increase defensive, offensive, or resistance stats, depending on the gear you apply them to. You'll find sockets on your armor, jewelry, and weapons where you can slot gems into place by using the jeweler at most villages.

Diablo 4 gems can be crafted or found in the open world obtained from chests and ores, and they can then be combined by a Diablo 4 jeweler to create more powerful, upgraded versions, so it's worth picking up all that you see. Check out our Diablo 4 classes hub to help you decide who you're going to slay the streets of Sanctuary as, and the best builds for each of them.

All Diablo 4 gems

There are seven different types of gems in Diablo 4: Skulls, Amethyst, Diamond, Emerald, Ruby, Sapphire, and Topaz – each providing different benefits depending on their tier and rarity. To craft better gems, you need to combine three gems of the same tier and pay a certain amount of gold. We'll be sure to update this guide when we've discovered all the gems in the RPG game.

Gem Armor stat Weapon stat Jewelry stat Crude Skull 4.1% Healing Received [0.02] Life on Kill +100 Armor Chipped Skull 5.1% Healing Received [0.025] Life on Kill +175 Armor Skull 6.1% Healing Received [0.03] Life on Kill +230 Armor Flawless Skull 7.1% Healing Received [0.036] Life on  Kill +295 Armor Royal Skull 8.1% Healing Received [0.041] Life on Kill +340 Armor Crude Amethyst 6.6% Damage Over Time Reduction +4.1% Damage Over Time 11.5% Shadow Resistance Chipped Amethyst 8.2% Damage Over Time Reduction +5.1% Damage Over Time 14.3% Shadow Resistance Amethyst 9.8% Damage Over Time Reduction +6.1% Damage Over Time 16.9% Shadow Resistance Flawless Amethyst 11.4% Damage Over Time Reduction +7.1% Damage Over Time 19.6% Shadow Resistance Royal Amethyst 13.1& Damage Over Time Reducation +8.1% Damage Over Time 22.1% Shadow Resistance Crude Diamond +3.0% Barrier Generation +4.1% Ultimate Skill Damage 4.0% Resistance to All Elements Chipped Diamond +3.5% Barrier Generation +5.1% Ultimate Skill Damage 5.1% Resistance to All Elements Diamond +5.0% Barrier Generation +6.1% Ultimate Skill Damage 6.1% Resistant to All Elements Flawless Diamond +7.0% Barrier Generation +7.1% Ultimate Skill Damage 7.1% Resistance to All Elements Royal Diamond +8.0 Barrier Generation +8.1% Ultimate Skill Damage 8.1% Resistance to All Elements Crude Emerald +[0.06] Thorns +6.0% Critical Strike Damage to Vulnerable Enemies 11.5% Poison Resistance Chipped Emerald +[0.075] Thorns +7.5% Critical Strike Damage to Vulnerable Enemies 14.3% Poison Resistance Emerald +[0.09] Thorns +9.1% Critical Strike Damage to Vulnerable Enemies 16.9% Poison Resistance Flawless Emerald +[0.105] Thorns +10.5% Critical Strike Damage to Vulnerable Enemies 19.6% Poison Resistance Royal Emerald +[0.120] Thorns ??? 22.1% Poison Resistance Crude Ruby [0.05] Maximum Life +12.0% Overpower Damage 11.5% Fire Resistance Chipped Ruby [0.055] Maximum Life +15.0% Overpower Damage 14.3%Fire Resistance Ruby [0.06] Maximum Life +18.0% Overpower Damage 16.9% Fire Resistance Flawless Ruby [0.7] Maximum Life +21.0% Overpower Damage 19.6% Fire Resistance Royal Ruby [0.8] Maximum Life +24.0% Overpower Damage 22.1% Fire Resistance Crude Sapphire 4% Damage Reduction while Fortified +6.0% Critical Strike Damage to Crowd Controlled Enemies 11.5% Cold Resistance Chipped Sapphire 5% Damage Reduction while Fortified +7.5% Critical Strike Damage to Crowd Controlled Enemies 14.3% Cold Resistance Sapphire 6% Damage Reduction while Fortified +9.1% Critical Strike Damage to Crowd Controlled Enemies 16.9% Cold Resistance Flawless Sapphire 7% Damage Reduction while Fortified +10.5% Critical Strike Damage to Crowd Controlled Enemies 19.6% Cold Resistance Royal Sapphire 8% Damage Reduction while Fortified +12.0% Critical Strike Damage to Crowd Controlled Enemies 22.1% Cold Resistance Crude Topaz 6.6% Damage Reduction while Control Impaired +13.3% Basic Skill Damage 11.5% Lightning Resistance Chipped Topaz 8.2% Damage Reduction while Control Impaired +16.7% Basic Skill Damage 14.3% Lightning Resistance Topaz 9.8% Damage Reduction while Control Impaired +20.0% Basic Skill Damage 16.9% Lightning Resistance Flawless Topaz 11.4% Damage Reduction while Control Impaired +23.3% Basic Skill Damage +19.6% Lightning Resistance Royal Topaz 13% Damage Reduction while Control Impaired +26.7% Basic Skill Damage +22.1% Lightning Resistance

How to craft D4 gems

Crafting gems in Diablo 4 requires gathering crude crystals and skulls around Sanctuary, and combining them into a higher-tier gem with a jeweler. Obtain raw gems by destroying ore veins. While gems can drop from any ore vein, they are more likely to appear from rarer Glittering Ore Veins. There is also a chance that you will receive gems from chests.

To craft Combine Level required Chipped Skull 3x Crude Skull 20 Chipped Amethyst 3x Crude Amethyst 20 Chipped Diamond 3x Crude Diamond 20 Chipped Emerald 3x Crude Emerald 20 Chipped Ruby 3x Crude Ruby 20 Chipped Sapphire 3x Crude Sapphire 20 Chipped Topaz 3x Crude Topaz 20 Skull 3x Chipped Skull 40 Amethyst 3x Chipped Amethyst 40 Diamond 3x Chipped Diamond 40 Emerald 3x Chipped Emerald 40 Ruby 3x Chipped Ruby 40 Sapphire 3x Chipped Sapphire 40 Topaz 3x Chipped Topaz 40 Flawless Skull 3 x Skull 50 Flawless Amethyst 3 x Amethyst 50 Flawless Diamond 3 x Diamond 50 Flawless Emerald 3 x Emerald 50 Flawless Ruby 3 x Ruby 50 Flawless Sapphire 3 x Sapphire 50 Flawless Topaz 3 x Topaz 50 Royal Skull 3 x Flawless Skull 60 Royal Amethyst 3 x Flawless Amethyst 60 Royal Diamond 3 x Flawless Diamond 60 Royal Emerald 3 x Flawless Emerald 60 Royal Ruby 3 x Flawless Ruby 60 Royal Sapphire 3 x Flawless Sapphire 60 Royal Topaz 3 x Flawless Topaz 60

Additional sockets can be added to your gear if you acquire a Scattered Prism, which can be dropped by defeating certain Diablo 4 world bosses. These allow more than one gem to be applied to your gear for further buffs and benefits.

How to unlock the Diablo 4 jeweler

When your character reaches level 20, you will trigger the priority quest Gem Crafting, which unlocks the Diablo 4 jeweler Kratia in Kyovashad. Once you complete the quest, you can interact with any jeweler in villages across Sanctuary. To check if a town has a jeweler, hover over the waypoint in your Diablo 4 map and check for the gem icon.

That's all for Diablo 4 gems for now, but we'll be regularly updating this guide as we proceed through the game. If you're looking for other ways to become the strongest demon slayer in Sanctuary, our Diablo 4 Necromancer build and Diablo 4 Barbarian build guides will have you up to scratch in no time, and don't forget to absorb our knowledge on the best weapons in the game.