Best Gems for Arcane Mage in WoW Midnight (Patch 12.1.0)
Patch 12.1.0 · Updated Sep 20, 2026 · derived from simmed stat weights
Put Flawless Masterful Amethyst (+17 Mastery) in every prismatic socket on Arcane Mage for single target. Flawless Deadly Garnet is next, 5% behind. Values are for patch 12.1.0.69875.
- Best gem, DPS per socket
- +581
- Baseline
- 200,354 DPS
- Gems ranked
- 4
Gems ranked, single target
Every Midnight epic gem, ranked by the DPS it adds per socket using this spec's simmed stat weights.
| # | Gem | Stat | DPS per socket | Of best | |
|---|---|---|---|---|---|
| 1 |  Flawless Masterful Amethyst | +17 Mastery | +581 | 100% | |
| 2 |  Flawless Deadly Garnet | +17 Critical Strike | +553 | 95% | |
| 3 |  Flawless Versatile Lapis | +17 Versatility | +546 | 94% | |
| 4 |  Flawless Quick Peridot | +17 Haste | +530 | 91% | |
DPS per socket is the gem's rating times the Arcane Mage stat weight for that stat. The bars are relative to the best gem.
Socket guide
Secondary stat order
Mastery (0.62) > Critical Strike (0.59) > Versatility (0.58) > Haste (0.57). Full Arcane stat priority.
Meta and primary-stat gems
A meta socket takes its own gem and should always be filled. Primary-stat cuts are not ranked here; the ranking is the single-secondary epic cuts that go in prismatic sockets.
Paste your /simc string to get a ranked upgrade list for your character.
New to simming? How to get your /simc string
Methodology
Formula
DPS per socket = rating on the gem times the spec's stat weight (DPS per point) for that stat. Gem ratings come from the game's data at the current build; weights from the weekly SimulationCraft scale-factor sim.
Weights used
Arcane Mage: Intellect 55.11, Mastery 34.15, Critical Strike 32.51, Versatility 32.11, Haste 31.19 DPS per point, on a 200,354 DPS baseline.
Source and patch
SimulationCraft 4345b293920a3740c5a27952a9fc6ab202f33674, client build 12.1.0.69875, gem catalog 12.1.0.69283, generated Sep 20, 2026.
Frequently asked questions
What is the best gem for Arcane Mage in Patch 12.1.0.69875?
Flawless Masterful Amethyst (+Mastery) is worth 581 DPS per socket for Arcane Mage on single target, the most of any epic gem, so it goes in every prismatic socket.
What is the full gem order for Arcane?
Flawless Masterful Amethyst (+581), Flawless Deadly Garnet (+553), Flawless Versatile Lapis (+546), Flawless Quick Peridot (+530). The number is DPS per socket from the spec's stat weights.
How many sockets do I have?
Check your character sheet: necks and rings can come with a socket, and the seasonal socket item adds one to a head, neck, ring, wrist or belt piece. Fill every prismatic socket with the top gem here and the meta socket with a meta gem.
Should I mix gems?
No. Stat weights are close to linear over a few sockets' worth of rating, so Flawless Masterful Amethyst stays the best choice in every socket. Mixing only matters when two stats are within a couple of percent, and then either is fine.
Why is this derived from stat weights instead of simmed?
Swapping one gem changes DPS by less than the sim's run-to-run noise, even at high iteration counts. Stat weights measure the value of each stat over the whole fight and stay steady from week to week.
How often is this updated?
Every Sunday after the weekly SimulationCraft update, when the stat weights are re-simmed.