Wikia

Crystal Chest
Type	Chests
Tool
Stackable	Yes (64)
Data Value	181:5
EMC Value	34,894
Mod Included	Iron Chests

The Crystal Chest is a chest with 108 storage slots, the same as two double chests and 4 more than an Alchemical Chest. This is an extra 81 spaces when compared to a regular Chest.

The Crystal Chest is transparent, so the items within it are viewable from outside. It is compatible with Pipes and Pneumatic Tubes. It requires a stone pickaxe or greater to be collected. It has the same amount of storage slots as the Diamond Chest, but is transparent. There is no benefit to making a Crystal Chest other than for looks. It is from the Iron Chests Mod.

Warning: This chest may cause lag on slower computers and servers: Reference

Some items appear to have different colors inside the chest, including grass.