Gems are useful items in Diablo IV that can enhance your equipment and build. Which one should you use in the game? Today we’ll walk you through the best gems for Diablo 4 weapons, armor, and jewelry, as well as some basics covering gem stats, tiers, upgrade levels, and crafting. 

Diablo 4 Best Gem to Use - D4 Weapon, Armor and Jewelry Gems 

In Diablo 4, there are seven types of gems, including Skull, Amethyst, Diamond, Emerald, Ruby, Sapphire, and Topaz, each of them is available in different levels and tiers, which results in different stats and benefits. Which gems to put in your weapon, jewelry, and armor? 

Related Read:

Diablo 4 1.1.1 Buff Build Tier List - Top 10 Best Buffed Builds

Diablo 4 1.1.1 Tier List - Diablo 4 1.1.1 Builds Ranking for Each Class 

1 - Diablo 4 Best Gem for Weapon

How to determine the best gems for your weapons in D4? It is depending on your build. Thanks to Lucky Ghost Diablo, here are three recommendations for weapon gems.

1)If your build is focusing on DOT (Damage Over Time), you are going to go for the Amethyst for increased damage over time. DOTs can't crit and any amplification to crit damage that you do is not going to help them. 

Crude Amethyst: +4.0% Damage Over Time

Chipped Amethyst: + 5.0% Damage Over Time

Amethyst: +6% Damage Over Time

Flawless Amethyst: +7% Damage Over Time

Royal Amethyst: +8% Damage Over Time

2)If you are not creating a DOT build and run vulnerable, you have good uptime on it and keep casting it on your enemies, they spend most of the time vulnerable, then Emerald is the right choice, it gives you critical strike damage to vulnerable enemies anytime. You can amplify the vulnerable damage, you want to find vulnerable on every piece of gear that can add to vulnerable damage and that applies to your gem, it is one of the strongest buffs in the game. 

Crude Emerald: +6% Critical Strike Damage to Vulnerable Enemies

Chipped Emerald: +7.5% Critical Strike Damage to Vulnerable Enemies

Weapon: +9% Critical Strike Damage to Vulnerable Enemies

Flawless Emerald: +10.5% Critical Strike Damage to Vulnerable Enemies

Royal Emerald: +12% Critical Strike Damage to Vulnerable Enemies

3)If you are not running vulnerable, the best gem choice is going to be Royal Sapphire, this is going to give you critical damage to crowd control enemies, when you are crowd-controlling them, you’ll get increased critical strike damage to them. It counts for slow, it counts for stunned and immobilized, doing anything to control or slow their movement, you are going to get this buff. 

Crude Sapphire: +6% Critical Strike Damage to Crowd Controlled Enemies

Chipped Sapphire: +7.5% Critical Strike Damage to Crowd Controlled Enemies

Sapphire: +9% Critical Strike Damage to Crowd Controlled Enemies

Flawless Sapphire: +10.5% Critical Strike Damage to Crowd Controlled Enemies

Royal Sapphire: +12% Critical Strike Damage to Crowd Controlled Enemies

2 - Diablo 4 Best Gem for Jewelry

Which gems should you put in your jewelry in Diablo IV? There is a consistent answer for that. In your jewelry, you are going to put Skulls on every character every time. Just put the highest quality Skull gem, it gives you increased armor, armor is much more powerful and valuable as a defensive stat than any resistances, so compared to other options, Skull is the best option. It can make you against melee attacks, ranged attacks, and every type of elemental damage. Actually, the resistances don’t do a lot in D4, they are way less important than they intended them to be now, so there is so reason to get them on jewelry and gear. 

Crude Skull: +100 armor

Chipped Skull: +125 armor

Skull: +150 Armor

Flawless Skull: +175 Armor

Royal Skull: +200 Armor

3 - Diablo 4 Best Gem for Armor

If you are not sure what gems are always good for your armor, Topaz is a safe option. When one of the CC sources is slowing you or preventing you from moving, you are trying to get away but you couldn’t, that’s where the Topaz gem functions, put a couple of those in your gear, and you can get increased damage reduction while control impaired. 

Crude Topaz: 6.6% Damage Reduction while Control Impaired

Chipped Topaz: 7% Damage Reduction while Control Impaired

Topaz: 7.4% Damage Reduction while Control Impaired

Flawless Topaz: 7.8% Damage Reduction while Control Impaired

Royal Topaz: 8.2% Damage Reduction while Control Impaired

The alternative armor gem option is going to be the Ruby, it is also nice to have due to the increased life, which is another form of defense. Having more HP, you can take any type of damage more often. The damage reduction is a much more significant stat for you, but if you are not confident in your ability to move out of damage and when you're not control impaired, then the Ruby is going to be a solid choice.

Crude Ruby: +2% Life

Chipped Ruby: +2.5% Life

Ruby: +3% Life

Flawless Ruby: +3.5% Life

Royal Ruby: +4% Life

Moving on to the conclusion, for the most part, if have vulnerable, Emerald is the way to go for your Diablo 4 weapon gems, if you don’t need vulnerable but do crowd control, you can run the Sapphire, if most of your damage is coming from DOT, then use the Amethyst. The best option for jewelry is going to be Skulls, and Topaz is always useful in your armor. 

Diablo 4 Gems Guide

How to get gems in Diablo IV? They can drop from enemies or come in chests.

1)D4 gems tiers & upgrade levels

There are five gem levels in Diablo IV, they are Crude, Chipped, Standard, Flawless, and Royal. The Royal gems in D4 are the most powerful ones, and the Crude gems offer the lowest stats. Players can upgrade from the lower tier to the higher one with the help of a Jeweler, but certain levels need to be reached. 

Crude to Chipped: Level 20

Chipped to Standard: Level 40

Standard to Flawless: Level 60

Flawless to Royal: Level 70

2)How to craft gems in D4?

The crafting recipe of gems requires three gems of the lower tier and a certain number of Diablo IV gold to craft a new one with a higher tier. For example, to craft the Chipped Amethyst, 3 Crude Amethyst, and 4500 gold are needed.