![Diablo 3 legendary gems guide](https://cdn3.cdnme.se/5447227/9-3/screenshot_6_64e62947e087c31b3e7101ab.jpg)
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This effect is very similar to the Legacy of Nightmares set, but it has the benefit of granting you half the bonus for non-ancient items and it only costs you one Gem instead of two Rings. As players in Diablo III can wear a maximum of 13 items, the maximum total bonus from this Gem is 13 x 750% = 9750% damage and 13 x 4% = 52% damage reduction. The secondary effect, unlocked at rank 25, doubles this bonus for a total of 750% damage and 4% damage reduction per Ancient or Primal item. The multiplicative damage effect increases by 3.75% per level to a maximum of 375% at max Gem rank 99.
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While you have no set bonuses equipped (you can get this bonus if set items are equipped as long as no 2-piece or any other set bonus is active) every legendary item increases your damage dealt by 3.75% multiplicatively and reduces all damage taken by 2%. 3 Legendary Gem in Diablo 3 Legacy of Dreams Mechanics
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