The mega gems are back! Blizzard usher in another jewel-socketed season, as Horadric Jewels bring a lot of power to players, including the return of a classic Diablo 3 gem, the Bane of the Stricken!
Horadric Jewels
We have another iteration of the power gem. After the first version was not that great with Malignant Hearts lacking any armor and thus making builds a lot more vulnerable due to skull-less issues, the most recent implementation in the Season of Withcraft fixed that. The Season 9 Jewels keep that solution, with the skull armor bonus baked in.
Their effects have a wide range as well. From complementing and boosting the Horadric Spellcraft aspect of the season to more generic stat boosts, a lot of them sport a downside, or at least a chaotic element as well.
They don’t drop at all, but rather are crafted. Players will receive Horadric Tomes from Horadric Strongrooms inside Nightmare Dungeons starting at Torment 1. These are recipes that can be learned, and then you can craft the gem at Wayfinders. You’ll need standard gem fragments and the new Horadric Phials to craft them. As before, they can only be socketed in rings and amulets.

All Horadric Jewels
There are 15 jewels, with some returning from previous seasons, many new ones affecting Horadric Spells, and more. So, let’s take a look at all of them. You might find “Tyrant Bane” to be very familiar if you played some Diablo 3.
Seal of Control
While you have two or more Arcana from the School of Control equipped, gain 45%[+] Control Duration and 30%[+] Lucky Hit Chance.
Seal of Power
While you have two or more Arcana from the School of Power equipped, gain 25%[+] Movement Speed and 15%[+] Critical Strike Chance.
Seal of Denial
While you have two or more Arcana from the School of Denial equipped, gain 30%[x] more Barrier, Fortify and Thorns.
Horadric Crest
For each Arcana from a unique School you have equipped, gain 5%[+] Damage Reduction and 1%[+] Maximum Resistance to All Elements.
Reverie Horn
After you injure or kill an enemy, your Summons are empowered, growing larger and dealing 30%[x] more damage for 4 seconds.
Scornful Light
You deal 20%[x] and take 10%[x] more Elemental damage.
Tyrant Bane
After you deal damage over time to an enemy, they take 0.33%[x] more damage over time from you forever.
Liminal Echo
If you would take fatal damage, instead prevent that damage, invoke Propulsion, and become Invulnerable for 3 seconds. This can only occur once every 75 seconds.
Idol From Below
You gain 6%[x] primary stat, 8%[x] maximum life and you are always Unhindered. However, you will be hunted in Sanctuary’s darkest places by Jewel Guardians who were entombed to protect this relic.
Myriad Stone
After you cast your Catalytic Skill, if it is an Ultimate, gain 30%[+] Attack Speed for 10 seconds.
Spark of Creation
After you cast your Catalytic Skill, gain 10 Primary Resource.
Luminate Eye
Your Catalytic Skill gains 25%[+] Cooldown Reduction.
Brilliant Sigil
Your Infusions are 150%[x] more potent.
Elemental Brand
Your Catalytic Skill deals 33% damage of your Infusion’s element over 3 seconds. Lucky Hit: Dealing damage of your Infusion’s element has up to a 33% chance to trigger its secondary effect.
The Starflux
Your Catalysts deal 100%[x] more damage. However, you lose control over Horadric Spellcraft, causing your Catalysts to inherit Infusions randomly.