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All the playable characters inGenshin Impactrequire a special elemental gem that corresponds to their Vision’s element when they ascend. The one unique standout is the Traveler, who doesn’t use any of those elemental stones and instead requiresBrilliant Diamonds.
These gems areonlyused by the Traveler, which is fortunate, since they’re only found in one place, unlike the other elemental gems, which have many sources. This guide will outline how to find Brilliant Diamonds and how many of them are used for each ascension level.

Those looking for help finding the other ascension gems can use these quick links to head over to their respective guides:
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How Many Brilliant Diamonds Are Needed?
Despite needing a unique gem, the Traveler uses the same qualities and quantities at the same ascension levels as the other characters.
The number and type needed per ascension level are as follows:

20
1

40
2

50
3

60
4

70
5

80
6

Brilliant Diamond Sources
Every Brilliant Diamond will be obtained from the same source: The Adventurers' Guild. These gems serve as rewards when reaching certain Adventure Ranks. Brilliant Diamonds are among the rewards for each of the following Adventure Ranks:
AR 15

AR 25
AR 26
AR 28
AR 30
AR 35
AR 38
AR 40
AR 41
AR 42
AR 45
2x Brilliant Diamond Gemstone
Ascension Quests must be completed to level up Adventure Rank at certain levels. This occurs at AR 25, AR 35, AR 45, and AR 50.
Because the exact number of necessary gems are given out as rewards, lower-level Brilliant Diamonds cannot be crafted into higher-level ones like the other elemental gems.
Finally, it’s worth noting that Brilliant Diamonds are just one of the items needed for the Traveler’s ascension. The remaining requirements can be found in our Traveler ascension guide, located here: