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For more than 20 years, theDiablofranchise has been giving players shiny and expensive baubles for both cool decoration and increased power. One of the many new features thatDiablo 4has brought to the overflowing loot chest is nothing less than a virtual pile of glittering gemstones.
Unlike other RPGs that have Jewelcrafting or Mining professions that deal in gemstones,Diablo 4offers the services of a Jeweler for all of their cutting, socketing, or upgrading needs. None of these options are available to the character until level 20, but for the rest of the game, it’s an essential detail, especially for the endgame. Here’s everything players need to know about this NPC.

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Finding Gems
Players will find gems throughout the open world well before they can use the Jeweler to cut them. The ones that are found in iron ore nodes will be of chipped or crude quality. They can still be placed into sockets in this way, but at this point in the game, it’s preferable tocollect them and keep them until level 20,when the Jeweler can upgrade them.
Most gemswill be found in iron nodesscattered throughout Sanctuary. These nodes are more plentiful in rocky areas, tunnels, or old mines.

The Skulls that players find are used and classified as gems, but they are the only ones that won’t be found in iron ore nodes. They drop from slain enemies and are occasionally found in chests or loot caches.
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Unlocking The Jeweler
Once the playerreaches level 20, a priority quest will appear in their log to visit the Jeweler. All that’s required is to pay the Jeweler to cut a gem, any gem, and the quest is complete. Keep a few gems in the Stash or Inventory to complete this quest as soon as it becomes available.
The Ring and Amulets vendor is always located near or next to the Jeweler, but this NPC only sells rings and amulets and can’t provide the same services. Smaller towns that havea Ring and Amulets vendorwill not always have a Jeweler.

Using The Jeweler
Like certain other specialty vendors, such as the Alchemist or the Purveyor of Curiosities, not every town has a Jeweler. Their services become more useful as the character progresses in levels and gets some experience with managing upgrades and gem sockets.
Any Jewelcrafter can provide any of the following products and services, provided the character is of the appropriate level, has the right materials,and pays the service charge.

The character doesn’t need to have any of the gems in their inventory for the Jeweler to cut them. If they’re in the stash, they can be cut by the Jeweler, and the newly cut gem will appear in the character’s inventory. Other items in need of upgrades or socket adjustment, however, do need to be in the player’s inventory.
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Gems
There arefive grades of gems inDiablo 4:Crude, Chipped, Standard, Flawless, and Royal.Players can use Chipped at level 20, and they get an upgrade every 20 levels. This means they get Standard at 40, and Flawless at 60. Royal gems are for max-level characters. Gems have different bonuses and effects depending on whether they’re affixed to weapons, armor, or jewelry.
Increase to Damage-over-Time abilities
Decrease to damage taken from DoT abilities
Improved shadow damage resistance
Increase to barrier-generation abilities
Improved resistance to all elements
Increase to Critical Strike damage on Vulnerable enemies
Improved poison damage resistence
Overpower damage increase
Increase to maximum hit points
Increased fire resistence
Increase to Critical Strike damage on crowd-controlled enemies
Increase to damage reduction while Fortified
Improved cold damage resistence
Gives life to the character for every kill
Increases the rate of healing
Increase to armor rating
Basic Skill damage increase
Reduction to damage while Control Impaired
Improved lightning damage resistence
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