Marine Diamond[]
The Marine Diamond is a very-rare mineral that can only be crafted or found in shipwrecks, buried treasures or underwater ruins. However, probabilities to find them in the above-listed random loot chests are the lowest of all the items that can be found there.
It allows the player to make the Marine Diamond Armor.
Crafting[]
The crafting recipe is consisted of 1 heart of the sea (only found in buried treasures), 4 prismarine shards or crystals and 4 diamonds. Each craft will give you 4 marine diamonds.
Trivia[]
"The Marine Diamond was the first item added to the mod. The idea was to create a special type of diamond dedicated to the awesome underwater biomes that Minecraft offers."