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Gem
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Gems are small objects that grant bonuses when socketed into items. There are four types of gems in Diablo III; [[Amethysts]], [[Emeralds]], [[Rubies]] and [[Topazes]], which are found in 14 15 levels of quality. (The 15th, Marquise, was added in [[Patch 1.0.7]].) Only the first seven eight levels can be found from monsters or chests, with Flawless Squares the highest quality (and the only type that drops in Inferno as of [[v1.05]]) to drop. Higher levels of gems can only be crafted (for a price) by the [[Jeweler]], and the costs grow and accumulate impressively.
Creating a level 14 gem is quite a chore. The total costs, assuming a starting point in Inferno where Flawless Squares drop, is 729 Flawless Squares, 15,400,000 gold and 1631 [[Tomes of Secret]], for each Radiant Star gem.
As of patch v1.0507, there is no way to create or add sockets to items. During development the Jeweler was set to add sockets to items, but this ability was shelved pre-release, leaving players able only to hope for socket finds. It's often hoped that socketing might come back as a quest reward or for a price, in a patch or more likely in [[D3X]].
Gems are a very useful item to [[twink]] to new characters, as gems have no level requirements. Items with sockets are first found around level 15(some [[legendary]] items have sockets as low as level 10), in late Act One or early Act Two, and it's quite easy to add a gem with a bonus much larger than that of the item itself. Low level weapons with a high level [[Ruby ]] in them become wildly overpowered, but that's the whole fun of it for many players.
* '''''See the {{iw|gems Diablo 2 Gems}} page for details on that game's seven types of gems (skulls, diamonds, and sapphires do not appear in Diablo 3) and their bonuses.'''''
==Diablo III Gems==
[[File:Gem-chipped-star-topaz.jpg|left|frame|Early D3 gem.]]
[[File:Gems-1-14-label.jpg|frame|Earl Early version of [[Sapphire]]s.]]
Gems in Diablo 3 have evolved during the game's development. Though the concept of 14 levels of quality has remained constant, the types of gems, their names and graphics, and the materials and costs to upgrade them have evolved repeatedly.
* See the gems archive info further down this page for full details on their development.
===Weapons===
* [[Rubies]] are the most popular for the +%experience per kill. This bonus was irrelevant in the [[end game]] until the debut of the [[Paragon]] system, at which point it became the most sought after.
* [[Amethyst]]s are popular, especially for Hardcore characters, since the +%life bonus is a huge source of hit points, leveraging already high vitality bonuses.
* [[Topaz]] are also sought for the Magic Find bonus, while [[gold farmers]] may enjoy Emeralds for that bonus.
** The Topaz vs. Ruby debate is an interesting one, since high level players mostly seek paragon levels for the 3% bonus to Magic Find and Gold Find per level. Yet an affordable Star topaz grants 25% Magic Find, which is equivalent to the MF gain of more than 8 paragon Paragon levels, which will take weeks to gain given normal play time. Yet the instant gratification and bonus of a Topaz is seldom chosen over the long term growth of the Ruby.
==Upgrading Gems==
Gems can be upgraded by the [[Jeweler]], for a price. First of all, the Jeweler needs to be trained to his maximum level in order to craft the highest level gems. Even then, he can only upgrade gems to the 11th quality level, and just be taught the 3 4 highest tiers in each gem type by [[PlansDesigns]] that dropfrom monsters or objects. These drop quite Jeweler Designs and Blacksmith [[Plans]] dropped very rarely and only in Inferno (high Magic Find seems to help until [[Patch 1.0.7]] buffed their drop rate) are fairly difficult to obtainrates 4x. They All plans and designs can also be purchased from the GAH[[Auction House]], where their prices have steadily dropped over time. (Whe new recipes are introduced in patches, such as the level 63 items and as of Marquise gems in Patch v1.05 0.7, their prices had come down into the 200k rangevalues were very high for a day or two, after costing many millions each earlierbefore falling rapidly.)
All gem upgrades cost gold, and most require some materials as well. Lower level recipes are quite cheap in terms of gold and materials, and only require 2 gems to upgrade to the next level. Higher level gems require a lot of gold and materials, and it takes 3 gems to make 1 of the next rank. At the 2 > 1 upgrade ratio introduced in v1.03 (prior to that all upgrades were 3 > 1, plus much higher gold prices), it would require 256 chipped gems and 570 gold to create 1 Flawless Square (which is the highest gem that drops), though no one actually collects that many chipped gems since higher quality gems can easily be found.
When considering upgrade prices, bear in mind the cumulative costs, which are listed in the last column of the table below. For example, the price to make the highest 14th level gem, a Radiant Star, is 400k gold and + 20 [[Tomes of Secret]]+ 3 Flawless Stars. That doesn't sound so bad, until you consider realize that a Radiant Star each of those Flawless Stars had to be made from requires 3 Perfect Stars, or and 9 Flawless Stars, or and 27 Stars, and so on, down to the [[Flawless Squares ]] that form the base of the gem economy. The highest gems thus have a huge cumulative cost.
It requires a total of 729 Flawless Squares, 1631 Tomes of Secret, and 15,400,000 gold to make a single Radiant Star, not counting the gold required to upgrade the Jeweler in the first place, or to obtain the three highest level plans for each gem. Even assuming you had all the Flawless Squares, Tomes of Secret, and over 15 million gold in your stash, creating a Radiant Star would still take you 243 clicks on the Jeweler's upgrade bar. At 3 seconds per click, that's 729 seconds, or close to 12 minutes doing nothing but upgrading gemsclicking the "Upgrade" bar in the Jeweler's interface. And the [[Marquise Gems]] introduced in Patch 1.0.7 require 3 Radiant Stars each.
All gems and their bonuses, with game data pulled directly via the [http://www.diablonut.com|DiabloNut Database] database.
<item type="list" mode="misc">Gem</item>
===Marquise Gems===
[[Marquise Gems]] were added in [[Patch 1.0.7]] as the new, highest level gem. They are meant to serve as something of a gold sink, with a considerably higher creation cost than earlier levels of gems, despite adding only marginally to the function.
Marquise Emerald
* Weapon: Increased Critical Hit Damage by 110%
* Helm: +33% Extra Gold from Monsters
* Armor: +62 Dexterity
Marquise Topaz
* Weapon: Melee attackers take 2500 per hit
* Helm: 33% Better chance of finding magical items
* Armor: +62 Intelligence
Marquise Amethyst
* Weapon: Each Hit adds +700 Life
* Helm: +19% Life
* Armor: +62 Vitality
Marquise Ruby
* Weapon: +160 Minimum and +160 Maximum Damage
* Helm: Increases Bonus Experience by 33%
* Armor: +62 Strength
==Rubies Buffed==
[[Patch 1.0.7]] introduced Marquise Gems and also reworked Rubies, greatly increasing their damage when socketed in weapons. This was intended to make them a viable alternative to Emeralds, which were virtually the only gem socketed in weapons (at least in Softcore. In Hardcore Amethysts enjoyed some popularity for their [[Life on Hit]] bonus.)
From the official patch notes:[http://us.battle.net/d3/en/blog/8608455/patch-107-now-live-2-12-2013]
All ruby gems have had their weapon bonuses increased (these changes will apply to both existing rubies, as well as new rubies):
* Chipped Ruby: +3 minimum damage/+3 maximum damage (up from +2/+2)
* Flawed Ruby: +6 minimum damage/+6 maximum damage (up from +4/+4)
* Ruby: +9 minimum damage/+9 maximum damage (up from +8/+8)
* Flawless Ruby: +12 minimum damage/+12 maximum damage (up from +10/+10)
* Perfect Ruby: +15 minimum damage/+15 maximum damage (up from +11/+11)
* Radiant Ruby: +18 minimum damage/+18 maximum damage (up from +12/+12)
* Square Ruby: +21 minimum damage/+21 maximum damage (up from +13/+13)
* Flawless Square Ruby: +25 minimum damage/+25 maximum damage (up from +14/+14)
* Perfect Square Ruby: +30 minimum damage/+30 maximum damage (up from +15/+15)
* Radiant Square Ruby: +40 minimum damage/+40 maximum damage (up from +16/+16)
* Star Ruby: +60 minimum damage/+60 maximum damage (up from +17/+17)
* Flawless Star Ruby: +80 minimum damage/+80 maximum damage (up from +18/+18)
* Perfect Star Ruby: +100 minimum damage/+100 maximum damage (up from +19/+19)
* Radiant Star Ruby: +130 minimum damage/+130 maximum damage (up from +20/+20)
* Radiant Star Ruby: +160 minimum damage/+160 maximum damage.
These rubies have also had their bonus damage calculations changed, and will now add damage flatly to both the minimum and maximum values on weapons
* For example, if you have a weapon that does 150-200 damage and you socket a Perfect Square Ruby (which adds +30 minimum damage/+30 maximum damage), your weapon will do 180-230 damage.
==Future Gem Changes==
Further gem changes and modifications are expected in future patches and expansions.
For instance, the developers have discussed entirely reworking the reflects damage / [[thorns]] system, which would involve greatly buffing or reworking the bonuses granted by Topaz gems in weapons.
=Gems Info Archive=
<span style="color:red">The info below covers gems during development and the beta test and is preserved here as an archive of the game's development. Much of the following information is not current in the final game.</span>
[[category:Gems]]
[[category:Socketing]]
