Block Armor mod adds sets of armor made from various blocks in game. They have different durability and damage reduction modifiers, depending on the armor material.
With the exception of Sugarcane, Emerald, and Snow armor, all armors are crafted using the armor block type in the standard armor crafting recipe (Lapis armor is made with Lapis Lazuli blocks, Obsidian armor made with obsidian, etc.). Sugarcane and Emerald armor use the item form (i.e. emerald and not emerald block), and Snow uses leather or a leather chestplate in place of some snow blocks.