Guardian Chestplate

The Guardian Chestplate is a Chestplate piece acquired from the Prismarine Crystals V collection. You get an achievement by just wearing it. It's also part of the secret Monster Hunter / Raider set.

Crafting
The recipe requires 4 stacks of Prismarine Shards (256 total) and 4 stacks of Prismarine Crystals (256 total).