Gem qualities and socket effects
A gem's bonus depends on both its quality and its destination. Compare weapon, armor/helm and shield effects before socketing; the same gem does not grant the same benefit in every slot. This catalog contains all 35 gem records tracked by the app.
Keep the quality your recipe actually needs
Three matching gems of one quality upgrade to one of the next quality. Perfect gems cannot be upgraded further. Upgrading everything immediately can leave you missing a chipped or flawed gem for a planned rune upgrade. Decide which recipes you want to complete before combining your stock.
Crafted equipment uses its specified perfect gem, rune, jewel and eligible magic base. A gem tracker checks only the ingredients it tracks; it cannot inspect an in-game item's quality or level. Review the exact Cube inputs and the base restrictions first.
| Gem | Weapon | Armor / helm | Shield |
|---|---|---|---|
| Chipped Amethyst | +40 Attack Rating | +3 Strength | +8 Defense |
| Flawed Amethyst | +60 Attack Rating | +4 Strength | +12 Defense |
| Amethyst | +80 Attack Rating | +6 Strength | +18 Defense |
| Flawless Amethyst | +100 Attack Rating | +8 Strength | +24 Defense |
| Perfect Amethyst | +150 Attack Rating | +10 Strength | +30 Defense |
| Chipped Diamond | 28% Damage to Undead | +20 Attack Rating | 6% All Resistances |
| Flawed Diamond | 34% Damage to Undead | +40 Attack Rating | 8% All Resistances |
| Diamond | 44% Damage to Undead | +60 Attack Rating | 11% All Resistances |
| Flawless Diamond | 54% Damage to Undead | +80 Attack Rating | 14% All Resistances |
| Perfect Diamond | 68% Damage to Undead | +100 Attack Rating | 19% All Resistances |
| Chipped Emerald | Poison Damage: approximately 9 over 3 seconds | +3 Dexterity | 12% Poison Resist |
| Flawed Emerald | Poison Damage: approximately 19 over 4 seconds | +4 Dexterity | 16% Poison Resist |
| Emerald | Poison Damage: approximately 40 over 5 seconds | +6 Dexterity | 22% Poison Resist |
| Flawless Emerald | Poison Damage: approximately 59 over 6.08 seconds | +8 Dexterity | 28% Poison Resist |
| Perfect Emerald | Poison Damage: approximately 99 over 7.16 seconds | +10 Dexterity | 40% Poison Resist |
| Chipped Ruby | Adds 3–4 Fire Damage | +10 Life | 12% Fire Resist |
| Flawed Ruby | Adds 5–8 Fire Damage | +17 Life | 16% Fire Resist |
| Ruby | Adds 8–12 Fire Damage | +24 Life | 22% Fire Resist |
| Flawless Ruby | Adds 10–16 Fire Damage | +31 Life | 28% Fire Resist |
| Perfect Ruby | Adds 15–20 Fire Damage | +38 Life | 40% Fire Resist |
| Chipped Sapphire | Adds 1–3 Cold Damage (1 seconds) | +10 Mana | 12% Cold Resist |
| Flawed Sapphire | Adds 3–5 Cold Damage (1.4 seconds) | +17 Mana | 16% Cold Resist |
| Sapphire | Adds 4–7 Cold Damage (2 seconds) | +24 Mana | 22% Cold Resist |
| Flawless Sapphire | Adds 6–10 Cold Damage (2.4 seconds) | +31 Mana | 28% Cold Resist |
| Perfect Sapphire | Adds 10–14 Cold Damage (3 seconds) | +38 Mana | 40% Cold Resist |
| Chipped Topaz | Adds 1–8 Lightning Damage | 9% Better Chance of Getting Magic Items | 12% Lightning Resist |
| Flawed Topaz | Adds 1–14 Lightning Damage | 13% Better Chance of Getting Magic Items | 16% Lightning Resist |
| Topaz | Adds 1–22 Lightning Damage | 16% Better Chance of Getting Magic Items | 22% Lightning Resist |
| Flawless Topaz | Adds 1–30 Lightning Damage | 20% Better Chance of Getting Magic Items | 28% Lightning Resist |
| Perfect Topaz | Adds 1–40 Lightning Damage | 24% Better Chance of Getting Magic Items | 40% Lightning Resist |
| Chipped Skull | 1% Mana Stolen per Hit; 2% Life Stolen per Hit | +2 Replenish Life; 8% Regenerate Mana | +4 Damage Returned to Melee Attackers |
| Flawed Skull | 2% Mana Stolen per Hit; 2% Life Stolen per Hit | +3 Replenish Life; 8% Regenerate Mana | +8 Damage Returned to Melee Attackers |
| Skull | 2% Mana Stolen per Hit; 3% Life Stolen per Hit | +3 Replenish Life; 12% Regenerate Mana | +12 Damage Returned to Melee Attackers |
| Flawless Skull | 3% Mana Stolen per Hit; 3% Life Stolen per Hit | +4 Replenish Life; 12% Regenerate Mana | +16 Damage Returned to Melee Attackers |
| Perfect Skull | 3% Mana Stolen per Hit; 4% Life Stolen per Hit | +5 Replenish Life; 19% Regenerate Mana | +20 Damage Returned to Melee Attackers |
Putting the table to use
Compare the slot-specific effect with the need you are trying to solve, rather than choosing only by gem quality. Keep crafting stock separate from gems intended for equipment, and remember that removing socket contents with the Hel recipe destroys those contents. Inventory changes in this app do not change your game stash.
Track gem quantities · Read the other Cube material references · Plan a runeword safely
Sources and limits
This unofficial fan reference uses the app's released-game data. Check game edition, realm and patch before applying an equipment or encounter rule. Drop descriptions identify sources, not guaranteed outcomes. See Blizzard's 3.3 release notes and the pinned extracted game tables. Report corrections through Contact Us in the app menu.