HORN CORAL BLOCK

Horn coral is the yellow one, the colour that reads warmest against sand and does not fight with orange or brown terracotta the way blue or purple coral would. That makes it the coral block builders actually reach for on land, in a desert base or a sandstone courtyard, rather than saving it for an aquarium. The Wandering Trader sells the live block for 3 emeralds, no reef trip needed.

It is worth knowing what that purchase gets you into. No recipe in the game's files produces horn coral block, so a crafting table is never an option, and mining a live one without Silk Touch on the pickaxe hands you nothing back. Trading it is the only route that does not involve a warm ocean and an enchanted tool.

The catch is that yellow, sitting on dry ground, does not stay yellow. Coral needs a water source touching it to keep its colour, so a horn coral block dropped into a desert courtyard without a pool underneath bleaches out within moments. Some builders let that happen on purpose, for the pale, sun-dried look; most plan the pool first.

Just the Wandering Trader, just 3 emeralds, and just the 8 uses his stock gives you before the row goes grey for good. He does not restock it afterward. No profession sells horn coral block on any tier and no profession buys it either, so this is the entire market for the item in either edition.

There is no range on the price. It is a flat number in the trade file, so any two traders who both happen to be carrying horn coral block quote the same 3 emeralds.

He asks 3 emeralds each, and 57 of the other 75 come cheaper. Price is the easy part: he draws his stock from a shared pool, so catching one that happens to be carrying horn coral block is the real constraint.

The Wandering Trader asks 3 emeralds for a horn coral block. 8 of the 72 villagers that pay emeralds, emptied out:

3 diamonds against 72 paper for the same 3 emeralds, 24 times the carrying, and the shortest wait is the Fisherman at 1.9 real minutes of shelf, gathering not counted.

The trader spawns wherever you happen to be, not inside any village, arrives with two leashed llamas, and leaves again forty minutes to an hour later regardless of what you bought from him. He has no workstation, so nothing you place or break changes what he is carrying: his five common offers and two rarities are decided the instant he spawns.

He will not buy horn coral block back off you. His buying list only covers 6 kinds of item and coral is not among them, so the trade is one direction only. And because that stock is a slice of a much longer list, the merchant in front of you today may simply not have horn coral block at all, no matter how long you wait, since he never rerolls once he has spawned.

Naming him with a name tag stops the despawn timer, which is the only lever you have. It turns one lucky encounter into a shop you can walk back to, still selling the same yellow block at the same 3 emeralds until his 8 uses run out.

Plan the pool before you plan the block. Horn coral only keeps its yellow while touching a water source, so a land build wants a shallow trench or a glass-sealed tank under it, not a bare patch of sand. Skip that step and the 24 emeralds you spent on a full slot turns pale within the hour.

Buy small. A single block against terracotta or sandstone does more for a build than a whole wall of it, and at 3 emeralds each there is no cost saving to buying in bulk that outweighs the risk of it drying out unattended.

Also on the wandering trader's list: tube coral block, pale hanging moss, sulfur spike, rooted dirt, pale moss block and wildflowers.

Horn coral is the yellow member of a family of five that are all the same block wearing different colours. Every one of them dies out of water, turns grey, and stays grey, so the colour you buy is a colour you can lose by breaking the wrong bucket.

Yellow is the one people reach for when a build wants warm without going orange, and it sits well next to sandstone for that reason. Sealed behind glass with a water source inside, it keeps indefinitely.

It only exists in warm ocean reefs, and taking it home alive means Silk Touch. Anything else and you are carrying grey.