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.