From Destinypedia, the Destiny wiki
- "You've proven yourself worthy. Bring this to Variks in the Reef to redeem for a piece of armor."
- — In-game description
Armor Cores are rewarded once per week to players for completing the level 32 or level 35 Prison of Elders, or very rarely from the rewards chest at the end. Before the April Update It could be exchanged with Variks, the Loyal for a piece of armor, or combined with a Weapon Core to purchase a reward package with random loot from Variks.
It can now be turned in for reputation with House of Judgment.