Wikia

Diamond Chest
Type	Chests
Tool	<img alt="Grid Iron Pickaxe" src="data:image/gif;base64,R0lGODlhAQABAIABAAAAAP///yH5BAEAAAEALAAAAAABAAEAQAICTAEAOw%3D%3D" width="32" height="32" data-image-name="Grid Iron Pickaxe.png" data-image-key="Grid_Iron_Pickaxe.png" data-src="http://images3.wikia.nocookie.net/__cb20120308044558/thetekkit/images/1/1d/Grid_Iron_Pickaxe.png" class="lzy lzyPlcHld" onload="if(typeof ImgLzy=="object"){ImgLzy.load(this)}" /><noscript><img alt="Grid Iron Pickaxe" src="http://images3.wikia.nocookie.net/__cb20120308044558/thetekkit/images/1/1d/Grid_Iron_Pickaxe.png" width="32" height="32" data-image-name="Grid Iron Pickaxe.png" data-image-key="Grid_Iron_Pickaxe.png" />
Stackable	Yes (64)
Data Value	dec:181:2
EMC Value	34,886
Mod Included	Iron Chests

The Diamond Chest is an upgrade from the Gold Chest, both of which are added by the Iron Chests mod. It has 108 slots, which is 4 more than the Alchemical Chest (104), 27 more than the Gold Chest (81), and 81 more than a normal Chest (27).

This chest can be upgraded to a Crystal Chest, by crafting or a Chest Upgrade. This upgrade does not increase its storage size, but does allow players to see inside the chest without opening it.