Dark Prismarine is one of the craftable blocks and a type of stone that can be used for decoration.
To make a Dark Prismarine Block, you’ll need to find the Ocean Monuments and kill Guardian under the sea to get Prismarine shards. And then kill Squid for Inc Sac to give color to the prismarine block. Please follow the following steps to make a Dark Prismarine Block.
In order to make dark prismarine, you first need to find ocean monuments. You will have to prepare some potions (potion of water breathing, potion of night vision, potion of regeneration) before finding ocean monuments. Go towards the ocean to find a monument deep down in it. These potions will help you find and see the monument from above the water and also help you to breathe after getting into the ocean. Drink all the potions one by one before finding monuments.
Kill Guardian to get Shards
After going down into the ocean you need to find and kill a guardian so that you can get at least eight prismarine shards. It can take some time to kill them, be patient until you get the required shards.
Squid For Inc Sac
After that the next required item that you will have to find is ink sac. You need to kill squid in order to get ink sac. You will find them under water.
Move out of the ocean and go towards the crafting table. Open up the 3*3 crafting grid and add ink sac in the center cell and eight prismarine shards in remaining cells of the grid. This will craft a dark prismarine block for you. Add this item in your “ready to use” stock.