Gem

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Gems are small objects that grant bonuses when socketed into items. There are five types of gems in Diablo III; Amethysts, Diamonds (added in D3v2), Emeralds, Rubies and Topazes. The bonuses provided by gems increase with the rank of the gem and become quite substantial at the highest ranks.

Gems drop randomly from every sort of target; monsters, Elites, chests, barrels, etc. At least one and often several gems drop from special targets, such as Resplendent chests, Treasure Goblins, Horadric Caches, etc. Gems can be upgraded in rank by the Jeweler for a fee of gold and materials.

Items in several slots can spawn with one or more sockets, but there is no way to add additional sockets in Diablo 3. Only the Mystic, added in Reaper of Souls, can potentially add sockets via enchanting an affix. The Jeweler can remove gems from sockets, for a gold fee, in D3 and RoS.

Socketed gems have no effect on the level requirement of an item, and and are thus one of the most useful twinks to boost the gear quality of a lower level character.

  • See the Gems Archive for details about gems from D3's development and for the different properties and costs from Diablo 3 vanilla
  • See the Diablo 2 Gems page for details on that game's seven types of gems.


Legendary Gems

Legendary Gems were added to the game in Patch 2.1. They can be upgraded repeatedly and will only fit into sockets in rings and amulets.


Socketing Basics

The bonuses from gems are quite powerful, and a primary affix that adds socket(s) to an item is one of the most desired item properties. Sockets begin to appear in items around level 15 (a few legendary helms can have a socket at level 10-15), and in the end game a socket is considered all-but-mandatory in weapons. In weapon sockets, players generally socket Emeralds for Critical hit Damage. Rubies for +damage, or Diamonds for +Elite damage are less popular.

A socket in a helm is also very desired, and usually used to obtain +EXP% from a Ruby, +Life% from an Amethyst, or Reduced cooldown from a Diamond.

All other items with a socket are considered "other" in terms of the bonuses they provide, (+to a single stat or All Res from a diamond) and these include:


Gem Ranks

A full list of gems by ascending rank. It appears that the new gems drop in each bracket of ten levels starting from around level 20 (possibly including levels 15-19 in the lowest category), with Perfect Square dropping from 50-60.

  1. Regular gem
  2. Flawless gem
  3. Square gem
  4. Perfect Square gem
  5. Star gem -- Upgrade only.
  6. Flawless Star gem -- Upgrade only.
  7. Perfect Star gem -- Upgrade only.
  8. Radiant Star gem -- Upgrade only.
  9. Marquise gem -- Upgrade only in D3: Drops lvl 61+ in Reaper of Souls.)
  10. Imperial gem -- RoS-only. Upgrade, or rarely drops from lvl 61+ on Master+ difficulty.
  11. Flawless Imperial gem -- Upgrade only. RoS only.
  12. Royal gem -- Upgrade only. RoS only.
  13. Flawless Royal gem -- Upgrade only. RoS only.

There were more low level gems prior to 2.3, and in total there were a total of 19 tiers of gem compared to the current 13.

Upgrading Gems

Chipped gems drop starting around level 15, with the next highest quality gem beginning to fall about every 6th level higher, culminating in the Flawless Square, which drops from enemies around level 55-60. In Diablo 3 Gems can be upgraded all the way to rank 15, the Marquise, though this is a very long and expensive process, especially in D3v2 with no more Auction House. (Upgrading all the way to a Marquise gem in D3v2 requires a total investment of 9,280,000 gold and 2143 Flawless Square gems.)

Reaper of Souls ups the gem quality considerably, and while nothing changes from level 1-60, level 61 targets (monsters, chests, objects, treasure goblins, etc) drop rank 15 Marquise gems, with a chance for Rank 16 Imperial gems to drop on Master or higher difficulty. Gems in RoS can be upgraded to rank 19, Flawless Royal quality.

Gem removal is done via the Jeweler. Gems cost gold to remove from items, or can be removed for free by salvaging, which destroys the item but not the gem(s). The costs to remove gems have been tweaked repeatedly, and costs were considerably lowered for high end gems in Reaper of Souls in Patch 2.0.5. Gem removal prices, per gem, as of that patch:

Gem upgrade costs have been tweaked several times. The entire system received an overhaul for D3v2, with much lower gold costs and an almost total removal of material components. It's much cheaper to make the highest level gems in Reaper of Souls than it was to make them in Diablo 3 vanilla, though the number of gems is the same, with 2 > 1 until Flawless Square and 3 > 1 at all levels above that.

  • See the Gems archive article for info about upgrade costs in earlier versions of Diablo 3.
To Create: Materials Required Cumulative Cost [e]
Chipped N/A Find them.
1 Flawed
  • 10 gold
  • 2 Chipped
Find them.
1 Regular
  • 25 gold
  • +2 Flawed
Find them.
1 Flawless
  • 40 gold
  • +2 Regular
Find them.
1 Perfect
  • 55 gold
  • +2 Flawless
Find them.
1 Radiant
  • 70 gold
  • +2 Perfects
Find them.
1 Square
  • 85 gold
  • + 2 Radiant
Find them.
1 Flawless Square
  • 100 gold
  • +2 Squares
Find them.
1 Perfect Square
  • 5000 gold
  • +3 Flawless Squares
5k gold
  • (3 Flawless Squares)
1 Radiant Square
  • 10,000 gold
  • +3 Perfect Squares
15k + 10k = 25k
  • (9 Flawless Squares)
1 Star
  • 20,000 gold
  • +3 Radiant Squares
25k x 3 = 20 = 95k gold
  • (27 Flawless Squares)
1 Flawless Star
  • 30,000 gold
  • +3 Stars
95k x 3 + 30k = 315k gold
  • (81 Flawless Squares)
1 Perfect Star
  • 50,000 gold
  • +3 Flawless Stars
315k x 3 + 50k = 995k gold
  • (243 Flawless Squares)
1 Radiant Star
  • 75,000 gold
  • +3 perfect stars
3 x 995k + 75k = 3,060,000 gold
  • (729 Flawless Squares)
1 Marquise Gem
  • 100,000 gold
  • +3 Radiant Stars
D3: 3 x 3,060k + 100k = 9,280,000 gold
  • (2143 Flawless Squares)

Find them level 61+ (RoS only).

1 Imperial Gem
  • 200,000 gold
  • +3 Marquise Gems
200k gold + 3 Marquise gems.
  • (Will occasionally drop in Master+ difficulty.)

(This level gem is required for enchanting legendary jewelry.)

1 Flawless Imperial Gem
  • 300,000 gold
  • +3 Imperials
900k gold
  • (9 Marquise Gems)
1 Royal Gem 3.1 million gold, 3 DBs
  • (27 Marquise Gems)
1 Flawless Royal Gem 9.8m gold, 9 DBs
  • (81 Marquise Gems)


Gem Properties

Each type of gem provides different bonuses in the three types of items: weapons, helms, and "other." The properties are the same for every rank of the each type of gem; only the values increase. Gems of the same rank share the same graphic; only the color changes.


Patch 2.1 Healing Buffs

All healing skills and regeneration was buffed greatly in Patch 2.1 in August 2014, with huge increases in value for the highest level Amethysts, found only in Reaper of Souls.

The amount of Life on Hit provided by the top 4 ranks of Amethysts has been significantly increased
  • Imperial increased from 800 to 3000
  • Flawless Imperial increased from 900 to 6400
  • Royal increased from 1000 to 8800
  • Flawless Royal increased from 1100 to 11200


Gem Rank Helm Weapon Other[e]
Chipped Gem
ItemGemAmethystRank1.png
Flawed Gem

Diamond-R02-flawed.png

  • Amethyst: +6% Life
  • Diamond: -4% cooldown of all skills
  • Emerald: +7% Gold Find
  • Ruby: +7% Experience
  • Topaz: +7% Magic Find
  • Amethyst: 3 Life per Hit
  • Diamond: +3% Damage to Elites
  • Emerald: +15% Critical hit Damage
  • Ruby: +6 Damage
  • Topaz: 3 Thorns damage
  • Amethyst: +10 Vitality
  • Diamond: +10 All Res
  • Emerald: +10 Dexterity
  • Ruby: +10 Strength
  • Topaz: +10 Intelligence
Regular Gem

ItemGemEmeraldRank3.png

  • Amethyst: +7% Life
  • Diamond: -4.5% cooldown
  • Emerald: +9% Gold Find
  • Ruby: +9% Experience
  • Topaz: +9% Magic Find
  • Amethyst: 6 Life per Hit
  • Diamond: +4% Damage to Elites
  • Emerald: +20% Critical hit Damage
  • Ruby: +9 Damage
  • Topaz: 6 Thorns damage
  • Amethyst: +14 Vitality
  • Diamond: +14 All Res
  • Emerald: +14 Dexterity
  • Ruby: +14 Strength
  • Topaz: +14 Intelligence
Flawless Gem

ItemGemRubyRank4.png

  • Amethyst: +8% Life
  • Diamond: -5% cooldown
  • Emerald: +11% Gold Find
  • Ruby: +11% Experience
  • Topaz: +11% Magic Find
  • Amethyst: 10 Life per Hit
  • Diamond: +5% Damage to Elites
  • Emerald: +25% Critical hit Damage
  • Ruby: +12 Damage
  • Topaz: 10 Thorns damage
  • Amethyst: +18 Vitality
  • Diamond: +18 All Res
  • Emerald: +18 Dexterity
  • Ruby: +18 Strength
  • Topaz: +18 Intelligence
Perfect Gem

ItemGemTopazRank5.png

  • Amethyst: +9% Life
  • Diamond: -5.5% cooldowns
  • Emerald: +13% Gold Find
  • Ruby: +13% Experience
  • Topaz: +13 Magic Find
  • Amethyst: 15 Life per Hit
  • Diamond: +6% Damage to Elites
  • Emerald: +30% Critical hit Damage
  • Ruby: +15 Damage
  • Topaz: 15 Thorns damage
  • Amethyst: +22 Vitality
  • Diamond: +22 All Res
  • Emerald: +22 Dexterity
  • Ruby: +22 Strength
  • Topaz: +22 Intelligence
Radiant Gem

ItemGemAmethystRank6.png

  • Amethyst: +10% Life
  • Diamond: -6% Cooldowns
  • Emerald: +15% Gold Find
  • Ruby: +15% Experience
  • Topaz: +15% Magic Find
  • Amethyst: 25 Life per Hit
  • Diamond: +7% Damage to Elites
  • Emerald: +35% Critical hit Damage
  • Ruby: +18 Damage
  • Topaz: 30 Thorns damage
  • Amethyst: +26 Vitality
  • Diamond: +26 All Res
  • Emerald: +26 Dexterity
  • Ruby: +26 Strength
  • Topaz: +26 Intelligence
Square Gem

Diamond-R07-square.png

  • Amethyst: +11% Life
  • Diamond: -6.5% Cooldowns
  • Emerald: +17% Gold Find
  • Ruby: +17% Experience
  • Topaz: +17% Magic Find
  • Amethyst: 35 Life per Hit
  • Diamond: +8% Damage to Elites
  • Emerald: +40% Critical hit Damage
  • Ruby: +21 Damage
  • Topaz: 50 Thorns damage
  • Amethyst: +30 Vitality
  • Diamond: +30 All Res
  • Emerald: +30 Dexterity
  • Ruby: +30 Strength
  • Topaz: +30 Intelligence
Flawless Square Gem

ItemGemEmeraldRank8.png

  • Amethyst: +12% Life
  • Diamond: -7% Cooldowns
  • Emerald: +19% Gold Find
  • Ruby: +19% Experience
  • Topaz: +19% Magic Find
  • Amethyst: 65 Life per Hit
  • Diamond: +9% Damage to Elites
  • Emerald: +45% Critical hit Damage
  • Ruby: +25 Damage
  • Topaz: 100 Thorns damage
  • Amethyst: +34 Vitality
  • Diamond: +34 All Res
  • Emerald: +34 Dexterity
  • Ruby: +34 Strength
  • Topaz: +34 Intelligence
Perfect Square Gem

ItemGemRubyRank9.png

  • Amethyst: +13% Life
  • Diamond: -7.5% Cooldowns
  • Emerald: +21% Gold Find
  • Ruby: +21% Experience
  • Topaz: +21% Magic Find
  • Amethyst: 105 Life per Hit
  • Diamond: +10% Damage to Elites
  • Emerald: +50% Critical hit Damage
  • Ruby: +40 Damage
  • Topaz: 200 Thorns damage
  • Amethyst: +38 Vitality
  • Diamond: +38 All Res
  • Emerald: +38 Dexterity
  • Ruby: +38 Strength
  • Topaz: +38 Intelligence
Radiant Square Gem

ItemGemTopazRank10.png

  • Amethyst: +14% Life
  • Diamond: -8% Cooldowns
  • Emerald: +23% Gold Find
  • Ruby: +23% Experience
  • Topaz: +23% Magic Find
  • Amethyst: 190 Life per Hit
  • Diamond: +11% Damage to Elites
  • Emerald: +60% Critical hit Damage
  • Ruby: +60 Damage
  • Topaz: 350 Thorns damage
  • Amethyst: +42 Vitality
  • Diamond: +42 All Res
  • Emerald: +42 Dexterity
  • Ruby: +42 Strength
  • Topaz: +42 Intelligence
Star Gem

ItemGemAmethystRank11.png

  • Amethyst: +15% Life
  • Diamond: -8.5% Cooldowns
  • Emerald: +25% Gold Find
  • Ruby: +25% Experience
  • Topaz: +25% Magic Find
  • Amethyst: 300 Life per Hit
  • Diamond: +12% Damage to Elites
  • Emerald: +70% Critical hit Damage
  • Ruby: +80 Damage
  • Topaz: 600 Thorns damage
  • Amethyst: +46 Vitality
  • Diamond: +46 All Res
  • Emerald: +46 Dexterity
  • Ruby: +46 Strength
  • Topaz: +46 Intelligence
Flawless Star Gem

Diamond-R12-flawless-star.png

  • Amethyst: +16% Life
  • Diamond: -9% Cooldowns
  • Emerald: +27% Gold Find
  • Ruby: +27% Experience
  • Topaz: +27% Magic Find
  • Amethyst: 400 Life per Hit
  • Diamond: +13% Damage to Elites
  • Emerald: +80% Critical hit Damage
  • Ruby: +100 Damage
  • Topaz: 900 Thorns damage
  • Amethyst: +50 Vitality
  • Diamond: +50 All Res
  • Emerald: +50 Dexterity
  • Ruby: +50 Strength
  • Topaz: +50 Intelligence
Perfect Star Gem

ItemGemEmeraldRank13.png

  • Amethyst: +17% Life
  • Diamond: -9.5% Cooldowns
  • Emerald: +29% Gold Find
  • Ruby: +29% Experience
  • Topaz: +29% Magic Find
  • Amethyst: 500 Life per Hit
  • Diamond: +14% Damage to Elites
  • Emerald: +90% Critical hit Damage
  • Ruby: +130 Damage
  • Topaz: 1250 Thorns damage
  • Amethyst: +54 Vitality
  • Diamond: +54 All Res
  • Emerald: +54 Dexterity
  • Ruby: +54 Strength
  • Topaz: +54 Intelligence
Radiant Star Gem

ItemGemRubyRank14.png

  • Amethyst: +18% Life
  • Diamond: -10% Cooldowns
  • Emerald: +31% Gold Find
  • Ruby: +31% Experience
  • Topaz: +31% Magic Find
  • Amethyst: 600 Life per Hit
  • Diamond: +15% Damage to Elites
  • Emerald: +100% Critical hit Damage
  • Ruby: +160 Damage
  • Topaz: 1800 Thorns damage
  • Amethyst: +58 Vitality
  • Diamond: +58 All Res
  • Emerald: +58 Dexterity
  • Ruby: +58 Strength
  • Topaz: +58 Intelligence
Marquise Gem Gem

Topaz-R15-marquise.png

  • Amethyst: +19% Life
  • Diamond: -10.5% Cooldowns
  • Emerald: +33% Gold Find
  • Ruby: +33% Experience
  • Topaz: +33% Magic Find
  • Amethyst: 700 Life per Hit
  • Diamond: +16% Damage to Elites
  • Emerald: +110% Critical hit Damage
  • Ruby: +190 Damage
  • Topaz: 2500 Thorns damage
  • Amethyst: +62 Vitality
  • Diamond: +62 All Res
  • Emerald: +62 Dexterity
  • Ruby: +62 Strength
  • Topaz: +62 Intelligence
Imperial Gem

Amethyst-R16-imperial.png
RoS only

  • Amethyst: +20% Life
  • Diamond: -11% Cooldowns
  • Emerald: +35% Gold Find
  • Ruby: +35% Experience
  • Topaz: +35% Magic Find
  • Amethyst: 3000 Life per Hit
  • Diamond: +17% Damage to Elites
  • Emerald: +115% Critical hit Damage
  • Ruby: +220 Damage
  • Topaz: 3100 Thorns damage
  • Amethyst: +100 Vitality
  • Diamond: +66 All Res
  • Emerald: +100 Dexterity
  • Ruby: +100 Strength
  • Topaz: +100 Intelligence
Flawless Imperial Gem

Diamond-R18-royal.png
RoS only.

  • Amethyst: +21% Life
  • Diamond: -11.5% Cooldowns
  • Emerald: +37% Gold Find
  • Ruby: +37% Experience
  • Topaz: +37% Magic Find
  • Amethyst: 6400 Life per Hit
  • Diamond: +18% Damage to Elites
  • Emerald: +120% Critical hit Damage
  • Ruby: +220 Damage
  • Topaz: 3725 Thorns damage
  • Amethyst: +160 Vitality
  • Diamond: +70 All Res
  • Emerald: +160 Dexterity
  • Ruby: +160 Strength
  • Topaz: +160 Intelligence
Royal Gem

Emerald-R18-royal.png
RoS only

  • Amethyst: +22% Life
  • Diamond: -12% Cooldowns
  • Emerald: +39% Gold Find
  • Ruby: +39% Experience
  • Topaz: +39% Magic Find
  • Amethyst: 8800 Life per Hit
  • Diamond: +19% Damage to Elites
  • Emerald: +125% Critical hit Damage
  • Ruby: +250 Damage
  • Topaz: 4350 Thorns damage
  • Amethyst: +220 Vitality
  • Diamond: +74 All Res
  • Emerald: +220 Dexterity
  • Ruby: +220 Strength
  • Topaz: +220 Intelligence
Flawless Royal Gem

Ruby-R19-flawless-royal.png
RoS only

  • Amethyst: +23% Life
  • Diamond: -12.5% Cooldowns
  • Emerald: +41% Gold Find
  • Ruby: +41% Experience
  • Topaz: +41% Magic Find
  • Amethyst: 11200 Life per Hit
  • Diamond: +20% Damage to Elites
  • Emerald: +130% Critical hit Damage
  • Ruby: +270 Damage
  • Topaz: 4975 Thorns damage
  • Amethyst: +280 Vitality
  • Diamond: +78 All Res
  • Emerald: +280 Dexterity
  • Ruby: +280 Strength
  • Topaz: +280 Intelligence


References