What is prismarine?
Prismarine is a family of stone-type building blocks. There are three of them: plain prismarine, prismarine bricks, and dark prismarine. They share a color range from blue-green to deep teal, but each one has its own pattern and tone.
All three generate naturally only inside ocean monuments. Monuments are the large temple-like structures that spawn in deep ocean biomes, and they are built almost entirely from prismarine and sea lanterns. Away from a monument, the only way to get prismarine is to craft it.
The plain variant is the one with the moving texture. Its surface cycles slowly through shades of green and blue, an effect no other block in the game has. Prismarine bricks and dark prismarine hold still.
How to get prismarine
There are two ways to get prismarine: mine it straight out of an ocean monument, or craft it from prismarine shards. Most players end up doing both.
Finding an ocean monument
Finding a monument is the first hurdle. They are not common, and they sit on the floor of deep ocean biomes, often a long way from land. An ocean explorer map, bought from a cartographer villager, points you to the nearest one. Without a map, you are watching for a dark, angular shape under the water while you sail across open deep ocean.
Mining it from the monument
A monument is made almost entirely of the three prismarine variants plus sea lanterns, so the structure itself is a giant prismarine deposit. You can mine any of it with a pickaxe and carry it home. Any pickaxe works, from wood to netherite.
The hard part is the building’s defenders. Monuments are patrolled by guardians and three elder guardians. The elder guardians hit you with Mining Fatigue, an effect that slows your block-breaking to a crawl. Try to harvest prismarine while fatigued and every block takes a painfully long time. Kill all three elder guardians first, or drink milk to clear the effect, and your mining speed returns to normal.
One detail worth knowing: prismarine drops itself when mined with any pickaxe, with no need for Silk Touch. Break it with your fist or a non-pickaxe tool and it drops nothing, so keep a pickaxe equipped the whole time.
The monument layout is worth knowing before you start digging. Each one holds a central room, several wings, and a hidden treasure chamber with eight blocks of gold sealed behind dark prismarine. Some monuments also have sponge rooms stocked with wet sponges, which help when you need to drain water out of the way. None of that changes the prismarine itself, but it is a reason to clear the whole building rather than chip blocks off the outside.
Crafting it from prismarine shards
The other source is the crafting table. Prismarine shards are the raw item, and they come from guardians and elder guardians. Kill the mobs circling a monument and they drop shards, along with the occasional prismarine crystal or raw cod. A single guardian does not drop much, so a few kills cover a few blocks, not a full build.
Place four prismarine shards in a two-by-two square and you get one plain prismarine block. The other two variants use the same shards in different recipes, covered in the next section.
If you need prismarine in bulk, build a guardian farm at the monument. A working farm produces a steady stream of shards, and from there you can craft as much prismarine as a project needs without touching the monument walls again.
The three prismarine variants
Every variant is crafted from prismarine shards, and each one looks different enough to be worth using on its own.
Prismarine is the plain block. Four prismarine shards in a two-by-two square make one. This is the only variant with the animated texture that shifts between green and blue.
Prismarine bricks use nine prismarine shards filling the full three-by-three grid to make one block. The result is lighter and more blue, with a clean brick pattern, and its texture does not animate.
Dark prismarine takes eight prismarine shards arranged around one black dye in the center of the grid to make one block. It is the darkest of the three, a deep green, and it also holds still.
Because the three share a color family but differ in tone and pattern, builders often use them together. A wall of prismarine bricks with a dark prismarine trim is a common monument-style look.
For most builds, plain prismarine carries the ocean theme on its own. Prismarine bricks read as cleaner and more structured, which suits floors and framed walls. Dark prismarine works best as an accent: trim, borders, and the gaps between brighter blocks.
Prismarine stairs, slabs, and walls
All three variants can be cut into stairs and slabs, which is what makes prismarine practical for real builds instead of flat walls. Plain prismarine also has a wall block. Prismarine bricks and dark prismarine do not get walls, only stairs and slabs.
You can craft these the normal way on a crafting table, but a stonecutter is faster and cleaner. Drop a prismarine block into a stonecutter and it shows every stair, slab, and wall option for that variant. The stonecutter matters most for stairs: the crafting grid turns six blocks into four stairs and loses material, while the stonecutter turns one block into one stair with nothing wasted.
How prismarine behaves
Prismarine is a solid, full block with about the same toughness as most stone. Its blast resistance is 6, so it holds up against a creeper roughly as well as cobblestone. It is not flammable, which makes it safe to build with near lava or fire.
It does not emit light. This trips up new players, because monument walls look like they glow. That glow comes from sea lanterns set into the prismarine, not from the prismarine itself. To make a prismarine wall give off light, you have to mix in sea lanterns or another light source.
The animated texture on plain prismarine is purely visual. It does not change how the block works, and it looks the same whether the block sits underwater or in open air.
For uses, prismarine fits naturally into anything water-themed, from underwater bases and aquariums to fountains and pier supports. It also works on its own as a cool-toned stone for paths and foundations well away from any ocean.
Prismarine and sea lanterns
Sea lanterns are the glowing blocks scattered through a monument, and they share a crafting chain with prismarine. One sea lantern takes four prismarine shards plus five prismarine crystals. Prismarine crystals drop from guardians the same way shards do, and you also get two or three of them by breaking a sea lantern without Silk Touch.
A sea lantern gives off light level 15, the brightest light in the game. Prismarine walls paired with sea lanterns are the classic underwater base palette, and it is the exact look the monument uses on itself.
Tips and common mistakes
A few things save time once you start working with prismarine:
- Always carry a pickaxe to the monument. Prismarine breaks slowly by hand and drops nothing without one.
- Deal with the elder guardians before you mine. Mining Fatigue makes harvesting prismarine miserably slow, and milk only clears it until the next elder guardian hits you again.
- Bring a water-breathing setup. A Potion of Water Breathing, a turtle shell helmet, or a conduit all let you work without surfacing for air.
- Do not expect prismarine to light a room. Use sea lanterns for that.
- For a build that needs hundreds of blocks, a guardian farm beats stripping the monument by hand.
Frequently asked questions
Where do you find prismarine in Minecraft?
Prismarine generates naturally only in ocean monuments, which spawn in deep ocean biomes. Once you have prismarine shards, you can also craft it anywhere.
How do you craft prismarine?
Place four prismarine shards in a two-by-two square in the crafting grid to make one plain prismarine block. Prismarine bricks need nine shards, and dark prismarine needs eight shards plus one black dye.
What pickaxe do you need to mine prismarine?
Any pickaxe works, including a wooden one. The block drops itself as long as you mine it with a pickaxe. Use anything else and you get nothing.
Does prismarine glow?
No. Prismarine gives off no light at all. The glow on monument walls comes from sea lanterns, which are a separate block.
Why does prismarine change color?
Plain prismarine has an animated texture that slowly cycles through green and blue shades. The effect is cosmetic only. Prismarine bricks and dark prismarine do not animate.
Is prismarine renewable?
Yes. Prismarine shards come from guardians, and guardians keep spawning at an ocean monument. The blocks in the monument structure are finite, but a guardian farm makes shards, and the blocks you craft from them, effectively unlimited.
What is the difference between prismarine and prismarine bricks?
Plain prismarine is darker, more green, and has a texture that slowly animates. Prismarine bricks are lighter, more blue, sit in a neat brick pattern, and stay still. Both are crafted from prismarine shards, but prismarine bricks use nine shards to plain prismarine’s four.
If you are heading to a monument for prismarine, build a guardian farm while you are there. The blocks you carry home cover one project. The farm covers every project after that.