As you can see, a Chipped (level 1 ) [[Ruby]] grants +2 [[Strength]], while a Flawed (level 2 ) [[Sapphire]] grants +4 [[Willpower]] and a level 3 [[Emerald]] (as seen in the [http://www.youtube.com/watch?v=UNP8QiNbFmU Gamescom 2010 Artisan video]) grants +7 [[Dexterity]].

It is possible that it is always the bonus granted from the gem a 75% increase in an attribute per level below it + the level of the current gem, and that the +2 from the Chipped [[Ruby]] is increased by 75% decides how much bonus a given gem gives to 3,5 on the Flawed [[Sapphire]] and then rounded an attribute. So a Emerald would give 4 (to the closest number without a decimal) bonus to an even 4. The +4 attribute granted from a Flawed [[Sapphire]] increased by 75% equals 7Emerald) + 3 (the level, like we can see on the [[Emerald]]. All 3 out of this is pure speculation and highly likely to change14, since itemisation is one of the last things that gets done in the development of the gameEmerald) = 7.

Another example would be a Flawed Ruby would give 2 (the attribute bonus from the Chipped Ruby) + 2 (the level of the Flawed Ruby) = 4. But it is an intressting thought, and if this theory holds true, then a maxed out Radiant Star (level 14) [[Ruby]] (or any gem that increses an attribute, I am just using a Ruby as an example) would give +3287 106 Strength if it was socked into something other than a weapon or a helm, which is a massive upgrade from the Flawless Star (level 13) [[Ruby]] that would "only" give 1878 92 Strength.