The best metal there is. The last band's weapons.
Crafting
Forge
Coal ×2
Coolant
Starsteel Ore ×2
Used in
Fast Glasses(Workbench)- (Forge)
Shortsword(Forge)
Longsword(Forge)
War Sword(Forge)
Greatsword(Forge)
Pistol(Forge)
Shotgun(Forge)
Quad Cylinder(Forge)
SMG(Forge)
Assault Rifle(Forge)
Sniper Rifle(Forge)
Boomerang(Workbench)
Fireball(Alchemy Table)
Firebeam(Alchemy Table)
Surcharge(Alchemy Table)
Wisp(Alchemy Table)
Finger Guns(Alchemy Table)
Breeze(Alchemy Table)
Bridge(Alchemy Table)
Cube(Alchemy Table)
Glaze(Alchemy Table)
Blizzard(Alchemy Table)
Strikes(Alchemy Table)
Boing(Alchemy Table)
Portal(Alchemy Table)
Swap(Alchemy Table)
Thunderstrike(Alchemy Table)
Thrower(Alchemy Table)
Geyser(Alchemy Table)
Bubble(Alchemy Table)
Contagion(Alchemy Table)
Rain(Alchemy Table)
Drain(Alchemy Table)
Rescue(Alchemy Table)
Corruption(Alchemy Table)
Ritual(Alchemy Table)
Doll(Alchemy Table)
Mino(Alchemy Table)
Pistolero(Alchemy Table)
Wallo(Alchemy Table)
Decoyo(Alchemy Table)
Bandito(Alchemy Table)
Candlelight(Alchemy Table)
Detect Life(Alchemy Table)
Ward(Alchemy Table)
Paralyze(Alchemy Table)
Fury(Alchemy Table)
Invisibility(Alchemy Table)
Traders' prices are before the Merchant skill. What they pay adds up across sales, fractions included.