- Subterra materials drive upgrades, crafting, and survival, so learn what to keep before you sell anything.
- Early ores like coal, copper, tin, and iron should be routed into upgrades, not random spending.
- Layer depth matters because rarer materials appear farther down and usually need stronger tools.
- Gems and shards are best reserved for recipes, quests, and progression gates.
Subterra Materials by Type and Tier
Subterra materials are the backbone of progression because every good mining run turns into either an upgrade, a craft, or a deeper push. The best way to manage them is to sort everything into a few buckets and decide which bucket helps your current route.
Ores
- Coal, Copper, Tin
- Iron, Silver, Gold
- Best for smelting and upgrade chains
Ingots
- Smelted from raw ore
- Used in later recipes
- Cleaner than carrying raw stacks around
Gems
- Topaz, Amethyst, Emerald
- Sapphire, Ruby, Diamond
- Best saved for quests and recipes
Utility Mats
- Roots, Slime Chunk, Water Flask
- Keys, scrolls, shards
- Fuel crafting, survivability, and chest access
| Category | Examples | Best Use | Priority |
|---|---|---|---|
| Basic ores | Rock, Coal, Copper, Tin | Early smelting and cheap progression | High |
| Mid ores | Iron, Silver, Gold | Tool upgrades and stronger recipes | High |
| Rare gems | Topaz, Amethyst, Emerald | Quest hand-ins and late upgrades | Medium |
| High-value gems | Sapphire, Ruby, Diamond | Save for gated recipes | Very High |
| Utility materials | Roots, Slime Chunk, Water Flask | Potions, explosives, and special recipes | High |
| Processed mats | Copper Ingot, Tin Ingot, Iron Ingot | Efficient crafting and upgrades | High |
Keep one stack for crafting, one stack for selling, and one stack reserved for future recipes. That simple habit prevents wasted mining time.
Best Early Materials and Farming Order
If you want smooth progress, start by farming the materials that unlock the next tier of tools instead of chasing the rarest node you can find. Early route planning matters more than raw luck.
Start with coal and rock
Mine enough basic stone-layer resources to support your first upgrades and crafting needs. Coal is especially useful because it appears in early recipes and keeps the route moving.
Add copper and tin next
Once your inventory can handle longer trips, target raw copper and raw tin. These materials open up the first practical ingot path and help you scale into deeper mining.
Hold iron for real progression
Iron becomes the first material that starts to feel like a checkpoint. Save enough raw iron and iron ingots for tools, not just quick sales.
Treat gems as future value
Topaz, Amethyst, Emerald, Sapphire, Ruby, and Diamond can look tempting to sell, but they often matter more in later quests and recipes.
| Material | Where to Focus | Why It Matters | Keep or Spend |
|---|---|---|---|
| Coal | Dirt and Stone layers | Early crafting, quests, and upgrade recipes | Keep most |
| Raw Copper | Stone layer | First reliable ingot path | Keep most |
| Raw Tin | Stone layer, below deeper depth ranges | Needed for stronger upgrade paths | Keep most |
| Raw Iron | Around deeper Stone routes | Major mid-early checkpoint material | Keep most |
| Topaz | Gem pockets and geodes | Quest and backpack routes | Save |
| Amethyst | Gem geodes and deeper Stone routes | Strong quest value | Save |
| Emerald | Deeper gem routes | Valuable in later recipes | Save |
| Diamond | Deep layers and geodes | High-value gated material | Save |
Do not sell every raw ore stack just because it has coin value. In Subterra, the safest long-term move is usually to process materials first and sell leftovers later.
Layer-by-Layer Farming Route
The cleanest Subterra materials route is layer-based: farm early ores near the surface, then expand into richer zones once your pickaxe, backpack, and survivability are ready. That keeps your runs profitable instead of random.
| Layer | Depth / Access | Key Materials | Risk Level | Best Target |
|---|---|---|---|---|
| Overworld | Surface hub | Shop items, smeltery access, portals | Low | Prep and reset |
| Dirt Layer | Surface to around Y -35 | Coal, Copper, Tin, Roots, Rock | Low | Starter ore loops |
| Stone Layer | Starts around Y -35 | Iron, Silver, Gold, Topaz, Amethyst, Emerald, Sapphire, Ruby, Platinum, Diamond | Medium | Main farming zone |
| Darkstone Layer | Starts around Y -435 | Cobalt, Nocturnite, Black Ice | High | Deep progression runs |
| Permafrost Layer | Starts around Y -723 | Platinum, Chromium, Moonstone, Titanium, Wolframite, Azurite | Very High | Advanced farming |
| Schwarzfrost Layer | Below Permafrost | Charged Ice, Eiskron, deep frozen loot | Very High | Endgame materials |
| Route Goal | What to Bring | What to Take Home |
|---|---|---|
| Beginner loop | Basic weapon, spare inventory space | Coal, Copper, Tin, Rock |
| Mid-game loop | Better pickaxe, backpack upgrade, healing | Iron, Silver, Gold, Topaz |
| Deep run | Strong weapon, mobility, oxygen support | Gems, higher-tier ores, special loot |
| Endgame push | Durable loadout, recovery items, safe retreat plan | Rare crystals, deep-layer resources |
If your bag fills before you reach your next milestone, the layer is too deep for your current setup. Back up, upgrade, then return with a better route.
What to Keep, Smelt, or Spend
This is where most mining efficiency is won or lost. A lot of players overvalue immediate coins and undervalue the materials needed to unlock the next meaningful upgrade.
Material Management Checklist:
- Keep coal, copper, tin, and iron for upgrade chains
- Smelt raw ore before selling unless you need quick cash
- Save gems for quests, tiered recipes, and later progression
- Track slime chunks, roots, and flasks for crafting utility
- Use rare materials only when they remove a real bottleneck
| Action | Best Materials | Why It Works | Notes |
|---|---|---|---|
| Keep | Coal, Copper, Tin, Iron | Early and midgame progression | These materials disappear fast |
| Smelt | Raw Copper, Raw Tin, Raw Iron, Raw Silver, Raw Gold | Raises value and crafting flexibility | Better than dumping raw stacks |
| Save | Topaz, Amethyst, Emerald, Sapphire, Ruby, Diamond | Quest and recipe gating | Spend only when needed |
| Use now | Roots, Slime Chunk, Water Flask | Potions and explosive recipes | Great utility, low regret |
Pickaxe First
Upgrade mining power when blocks feel slow to clear. Faster mining helps every route, especially deeper ones.
Backpack Second
Upgrade storage when trips end too early. More inventory space keeps profitable runs alive longer.
Gems Last
Rare gems look valuable, but they are more useful when you know the exact recipe they unlock.
Use your first strong material surplus on progression, not convenience. The fastest path is usually the one that removes the next bottleneck.
FAQ and Official References
- 2026-07-05 — Subterra on Roblox
- 2026-07-05 — Polyworks Studio Trello board
- 2026-07-05 — Polyworks Studio Roblox community
| Common Mistake | Better Move | Result |
|---|---|---|
| Selling all raw ore immediately | Smelt first, sell later | Better progression value |
| Chasing deep layers too early | Farm by layer milestones | Safer, more efficient runs |
| Spending gems on random crafts | Save gems for gated recipes | Less wasted rare material |
| Ignoring inventory limits | Upgrade backpack on schedule | Longer mining loops |
Q: What are the most important Subterra materials to farm first?
Start with coal, copper, tin, and iron. Those materials support early upgrades, smelting, and the first meaningful progression jumps.
Q: Should I sell raw materials right away?
Usually no. Smelt the ore first when possible, then sell extras. That gives you more flexibility for recipes and upgrade paths.
Q: Which materials should I save for later?
Hold onto gem materials like Topaz, Amethyst, Emerald, Sapphire, Ruby, and Diamond unless you need them for a specific recipe or quest.
Q: How do I make Subterra materials farming more efficient?
Match your route to your gear. Mine the deepest layer you can handle, keep inventory space open, and upgrade pickaxe and backpack in a balanced order.
The best Subterra materials strategy is simple: farm the right layer, keep upgrade-critical ores, and treat rare gems as long-term assets.