Blue terracotta is a block with blast resistance and used for decoration.
To make Blue Terracotta, you’ll need Raw Clay, Clay Blocks, Terracotta using Furnace and Lapis Lazuli. Please follow the following steps to make Blue Terracotta.
In order to make Terracotta, the basic item you need is Raw clay. You will have to find and get at least 32 raw clays. You can find them under the ocean.
After that you will have to craft clay blocks from Raw clays you have collected. Go towards the crafting table and add 32 clays in any four adjacent cells of 3*3 crafting grid, where each cell should contain 8 clays. You will get 8 clay blocks in the right side box of the crafting table, as 4 clays can make one clay block. Add these clay blocks into inventory.
Terracotta using Furnace
Now move towards the furnace to make terracotta. Add 8 clay blocks in the upper box and coal in the lower box to get 8 terracotta blocks as output in the right-side box of the furnace. Add these terracotta blocks into your inventory.
After that you will have to find lapis lazuli gemstone. You need to find and get at least one lapis lazuli stone. Use your iron pickaxe to obtain it.
Now you can craft Blue Terracotta using the crafting table. Open up 3*3 crafting grid and add lapis lazuli in the center cell and Eight Terracotta blocks in remaining cells of the crafting grid, as shown in the image below. You will get Eight Blue Terracotta blocks in the right-side box of the crafting table. Add these blocks into “ready to use” stock.