Borderlands 3's Director's Cut adds diamond keys and a new loot armory

The golden chest is now a trash bin, welcome to the Diamond Armory

Borderlands® 3 “Show Me the Eridium” Mini-Event Returns Today, New Loot Machines Arrive April 8

Borderlands 3' Director's Cut Guide: Maurice Black Market, Hemovorous Location and How to Get Diamond Keys

Borderlands 3 Director's Cut Add-on Available Today - Xbox Wire

The Shlooter improves the Diamond Vault Part 2: Amara Edition (Details in the comments) : r/borderlands3

Here's how Borderlands 3's Diamond Keys and Vault Cards work – Destructoid

Diamond key giving me actual loot : r/borderlands3

Borderlands 3 Director's Cut DLC DELAYED: Release Date, Contents, Price, Trailer and Everything We Know

Borderlands 3 Diamond Keys are a new reward coming to the Director's Cut add-on

Seventh Sense (mission weapon), Borderlands Wiki

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Borderlands 3 Diamond Keys are a new reward coming to the Director's Cut add-on

Borderlands 3 DLC Borderlands 3 Vault Cards » MentalMars

Gearbox - Enter the Diamond Armory on Sanctuary III.