Hydroneer Ores: Values, Spawn Rates, Veins, and Mining Depth Guide

Hydroneer ores are not one flat loot table. They are a depth ladder, and the rung you are standing on decides whether a three-hour mining build pays for itself or just fills crates with iron. If you have ever watched a drill spit out low-value nuggets while a neighbor's plot floods with cloutium, the difference usually comes down to two variables: how deep the dirt is, and whether your drill is parked on a vein. This guide rounds up the Hydroneer ores data that community testers have actually published — base values, spawn chances, vein yields, and the tier limits that keep early equipment stuck in shallow ground — with a date attached to every snapshot.

The Hydroneer Ores Worth Knowing

Every resource in Hydroneer falls into one of three buckets: common metal, deep metal, and gems. The value gaps between them are steep, so identifying what your conveyor is actually moving matters more than raw throughput.

• Iron — the backbone of early builds. It is the cheapest metal in the community price table and the most common drop in plain dirt.
• Gold — steady mid-tier money. It shows up at roughly the same rate as iron in some samples and sells for a modest premium.
• Cloutium — the high-value metal. Community videos describe tier 2 drills and harvesters as iron-and-cloutium builds, so you spend it as fast as you mine it.
• Corestone — the deep-dirt ore. One playthrough in a community video describes it as the resource that "comes from really low in the world," and a single corestone gem was later appraised by the jeweller at about 10,000 coins (player experience, not a guaranteed return).
• Hardstone — the cheapest entry in the price table, with no published spawn rate in the guide that lists it.
• Gems and crystals — emeralds, rubies, sapphires, onyx, and diamond. Onyx and diamond sit far above the rest.

The community-run Bridgepour Hydroneer wiki item database keeps short entries for each resource and notes that cloutium ore can be melted in a crucible into a bar or sold directly to the jeweller — which is the basic choice you face with most raw ore.

Base Values for Hydroneer Ores

Base values below come from Rainrune's Hydroneer Price Guide on Steam, posted 2024-06-11 and captured 2026-11-14. Treat them as a dated snapshot, not a live price list; check the in-game shop or the guide itself for whatever patch you are on.

The same guide states that refined metal is worth about 30% more than the base figure, and that unrefined gems sit roughly 70% below their listed values. That is the simplest profit lever in the game: smelting before selling. Note that these are per-unit guide values, not guaranteed sale prices for a full load — weight and processing state both factor into what a jeweller or vendor actually pays.

Spawn Chances: What Plain Dirt Actually Gives You

Two independent community datasets agree remarkably closely on the shape of the loot table. The first is Rainrune's Steam guide (posted 2024-06-11, captured 2026-11-14). The second is a player-run ore vein test posted in the Hydroneer Steam discussions on 2023-04-25, using readings from plain dirt at a fixed depth.

Both snapshots were collected separately, about 20 months apart, and by different methods, so read them as complementary rather than a single merged total. The takeaway is consistent: iron and gold make up the overwhelming majority of every plain-dirt haul, while cloutium is the thinnest stream on the table. If your build is producing nothing but iron, that is not bad luck — that is the baseline.

Ore Veins Are Where the Real Money Sits

A vein does not just add a little ore; it replaces most of the loot table. The 2023-04-25 test thread recorded more than 10,000 drill cycles on a cloutium vein and more than 1,000 cycles on a crystal vein, then compared both against plain dirt at the same depth.

The headline number is the cloutium jump: roughly 33 times the plain-dirt rate. The tester's own framing was blunt — a single drill on a cloutium vein does the work of 33 drills on ordinary dirt at the same depth, and matching three vein-fed drills would take around 100 drills on plain ground.

Vein shapes and drill placement

Three practical findings from the same thread are worth carrying into your own plot:

• Veins come in many sizes, from tiny pockets to large "chonkers," and all of them are odd-numbered in dimension around a central cube.
• Placing a drill on the vein's center versus its edge made no measurable difference across hundreds of cycles — the spread stayed inside random variance.
• Because veins are odd-sized, they can be awkward to fit with even-structured tier 2 drill layouts.

Players in that thread also mention using the terrain manipulator to clear plots and expose naturally buried veins, which is faster than blind digging.

Depth Tiers Decide Which Hydroneer Ores You Can Reach

Depth in Hydroneer is measured in dirt tiers, and each tier gates a different class of equipment. A community tier-dirt explainer made for Hydroneer 2.0 breaks the system down in blocks ("floors") counted down from ground level.

Two details from that explainer are easy to miss. First, a tier 2 drill can work all the way from floor 0 down to the tier 2 ceiling — it does not stop working in shallow dirt. A tier 1 drill, by contrast, simply stops the moment you cross below floor 8. Second, the dirt visibly darkens as you descend, so the gradient itself is a depth readout.

Depth is not a strict rule for ore, though. The vein tester noted that corestone and cloutium veins have been reported in tier 1 dirt, and one explainer confirmed tier 3 soil in South Hope at 15 blocks down. If you want the authoritative version of the current depth rules, check Hydroneer on Steam and its patch notes, since tier depth and equipment availability have shifted between major versions.

Practical Tips for a Profitable Ore Setup

• Drill the vein, not the scenery. Moving a drill a few blocks onto a cloutium vein can multiply its cloutium output by more than thirty.
• Do not overthink placement within a vein. Center and edge produced statistically identical results in a 10,000-cycle test.
• Read blueprint numbers carefully. In the automation video, a player spent two hours blocked because he read a required metal weight as a coin price — the build needed both iron and cloutium by weight.
• Smelt before you sell. Refined metal carries roughly a 30% premium in the community price guide; raw gems lose far more than that.
• Match the drill to the dirt. A tier 2 drill in tier 1 ground is wasteful but legal; a tier 1 drill below floor 8 is simply dead weight.
• Sort your gems early. Community playthroughs report that gem splitters and compressors need per-color routing to avoid jams, so build separation into the layout before the pile grows.

FAQ

What is the rarest ore in Hydroneer? By published spawn chances, cloutium is the thinnest stream. Rainrune's Steam guide (posted 2024-06-11, captured 2026-11-14) lists cloutium at 1.1% and corestone at 2%, and a 2023-04-25 tester recorded about 1% cloutium in plain dirt. Corestone is close behind on rate but is associated with much deeper dirt, so it is often the harder one to reach.

Do Hydroneer ores sell for more as bars than as raw nuggets? Yes, according to the community price guide: refined metal is listed at roughly 30% above base value, while unrefined gems are listed at about 70% below theirs. Melting ore in a crucible before selling is the lower-effort profit boost for most players.

Where exactly should I place a drill on an ore vein? Anywhere that intersects the vein. The 2023-04-25 test compared a drill on the vein's center with one on its edge across hundreds of cycles and found the difference inside random variance. Vein size and type matter far more than precise placement.

How deep do I need to dig for the best Hydroneer ores? Depth rules are tier-gated: tier 1 equipment stops at floor 8, tier 2 equipment reaches about floor 14, and tier 3 required equipment that did not exist at the time of the community explainer. Cloutium and corestone both appear more often in deeper dirt, but vein location matters more than raw depth.