Aventurine is an Imaginary-element character who follows the Path of Preservation. His kit centers around generating shields, triggering Follow-Up Attacks (FUA), and increasing the Crit DMG received by enemies.
Best Cavern Relics
(2) Increases DEF by 15%.
(4) Increases the max DMG that can be absorbed by the Shield created by the wearer by 20%.
This set greatly enhances Aventurine’s shielding capabilities, enabling his barriers to absorb more damage and offer stronger protection against enemy attacks.
Best Planar Ornaments
(2) Increases the wearer's Effect RES by 10%. When the wearer's Effect RES is at 30% or higher, all allies' CRIT DMG increases by 10%.
Broken Keel stands out as Aventurine’s best Planar Ornament, as his Talent grants him 50% Effect RES when deploying or maintaining a shield—consistently activating the set’s Crit DMG bonus.
Best Stats

Body
DEF%

Boots
SPD

Sphere
DEF%

Rope
DEF% / Energy Regeneration Rate
Substats
DEF% / CRIT DMG / SPD / Effect RES
info
Aventurine’s stat priority starts with reaching 4,000 DEF to unlock the full 48% Base Crit Rate from his Talent. Any DEF beyond that further increases his shield’s absorption. Equipping SPD boots and reaching at least 135 SPD is also recommended to secure more frequent turns. Once his DEF and SPD are well optimized, you can shift focus to Crit Rate and Crit DMG to enhance the damage of his Follow-Up Attacks and Ultimate.
Aventurine doesn’t need Effect RES from substats, as his Talent provides 50% when deploying or maintaining a shield. This also ensures consistent activation of Broken Keel’s Crit DMG buff, boosting overall team damage.
Best Light Cones
SourceLight Cone Event Warp
All-In
Increases the wearer's DEF by 40~64%. When the wearer provides a Shield to an ally, the wearer's CRIT DMG increases by 40~64%, lasting for 2 turn(s). When the wearer's follow-up attack hits an enemy target, there is a 100~160% base chance to increase the DMG taken by the attacked enemy target by 10.0~16.0%, lasting for 2 turn(s).This Light Cone provides everything Aventurine needs to protect and support his team, while also boosting the damage of his Follow-Up Attacks (FUA).
SourceStellar Warp, Light Cone Event Warp, Starlight Exchange, Stellar Convergence
Verdict
Increases the wearer's DEF by 24~40% and Effect Hit Rate by 24~40%. Increases the chance for the wearer to be attacked by enemies. When the wearer is attacked, increase their DEF by an extra 24~40% until the end of the wearer's turn.Boosts Aventurine’s DEF and shield strength, but the Effect Hit Rate is redundant due to his guaranteed Unnerved debuff.
SourceStellar Warp, Character Event Warp, Light Cone Event Warp
Inspire
Increases the wearer's DEF by 16~32%. For every on-field character that has a Shield, the DMG dealt by the wearer increases by 4~8%.A viable option that enhances both Aventurine’s shield absorption and the damage of his Follow-Up Attacks and Ultimate.
Sweet Dream
Increases the wearer's provided Shield Effect by 12~24%. When an ally target has a Shield, the DMG dealt increases by 12~20%.A reliable Light Cone that enhances Aventurine’s defensive capabilities while also increasing the damage dealt by shielded allies. Higher superimposition levels further boost shield absorption and overall damage output.
SourceStellar Warp, Departure Warp, Character Event Warp, Light Cone Event Warp
A New Round of Shuffling
Increases the wearer's DEF by 16~32%. When the wearer is attacked, there is a 100~120% base chance to Burn the enemy. For each turn, the wearer deals DoT that is equal to 40~80% of the wearer's DEF for 2 turn(s).A niche Light Cone primarily used by Aventurine in Acheron teams. Its effect inflicts Burn on enemies when the wearer is hit, and this debuff counts as one stack of Crimson Knot for Acheron. However, note that it doesn’t provide any DEF, which makes Aventurine’s shield weaker compared to other Light Cone options.