Eternia Crystal

   Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.

Eternia Crystal

• 

Statistics

Type	Event summon
Consumable	√
Tooltip	Place in the Eternia Crystal Stand to summon Etheria's portals
Rarity	03*
Buy	T1: 25 T2: 1 T3: 4
Sell	T1: 5 T2: 20 T3: 80
Research	3 required

• Internal Item ID: 3828

This article is about the Eternia Crystal "item". For the NPC, see Eternia Crystal (NPC).

The Eternia Crystal is an event-summoning item. When used in the Eternia Crystal Stand, the Old One's Army event begins. The Eternia Crystal is purchased from the Tavernkeep for 25 (pre-mechanical bosses), 1 (post-mechanical bosses), or 4 (post-Golem).

Tips

• Players may wish to stock up on Eternia Crystals before defeating the mechanical bosses, in order to save coins.
• Due to the price increase, it is possible to buy Eternia Crystals beforehand and sell them after the battles, netting a total profit of 55 per crystal (This no longer works on desktop. The price you sell the crystal for is based on the price you bought the crystal for regardless of which bosses you have defeated).
  • This is not possible on the  Switch version; they sell for 5 even post-Golem.

History

 Desktop version

• Desktop 1.3.4.1: Name changed from "Elder Crystal" to "Eternia Crystal".

• Desktop 1.3.4: Introduced.

 Console version

• Console 1.17: Introduced.

 Switch version

• Switch 1.0.1096.2: Introduced.

 Mobile version

• Mobile 1.4.0.5.0: Introduced.