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Gem
,→Gem Bonuses
As for what the gems will provide bonuses to, that's also unknown. The only recently confirmed stat is from a normal (level 3) [[Emerald]], as seen in the [http://www.youtube.com/watch?v=UNP8QiNbFmU Gamescom 2010 Artisan video]. That gem granted:
* Weapon: +4% Casting Speed.
* Helms: Attackers take 7 damage.
* Other: +7 dexterity
In the Diablo 2, v1.13expansion, a level 3 emerald grants:* Weapons: +40 17 poison damage over 5 seconds1 second* Armor & Helms: +5 6 dexterity.
* Shields: +22% Poison Resistance
** Clvl 12 required for all
The numerical bonuses (but not the type of bonus) from gems have changed over the course of Diablo 2's patchesfrom D2C to D2X, but clearly there are major differences in more than the numbers. Diablo 3 grants entirely different types of bonuses, and categorizes the socketable items differently as well.
These changes are largely due to the game's different combat mechanics and character requirements, but were also somewhat required by the different itemization issues. For instance, [[Sapphire]]s in helms/armor grant +mana in Diablo 2, but +mana isn't a viable bonus in Diablo 3, since only the [[Witch Doctor]] has mana for a resource.