In Assassin's Creed Odyssey Orichalcum is a rare and valuable material used to help you purchase unique cosmetics and other valuable items.
Acting as a bridge between the game's single-playing exploration and its online storefronts, Orichalcum acts as a currency for one of the game's vendors, helping you collect premium-style items without paying real-world funds.
Though it's an uncommon resource to get your hands on, thankfully there are a few sources you can get it from.
Where to find and spend Orichalcum in Assassin's Creed Odyssey
Orichalcum is a material that's actually a currency to be spent in one specific store front - the Oikos of the Olympians, found in south Phokis in the north part of the map.
You'll access the region fairly early on your travels, and spending it allows you to purchase specific items or loot boxes, allowing you to get cosmetics and other online items without spending Helix, the game's premium currency.
There are four sources of Orichalcum in the game:
Orichalcum Ore deposits (1 Orichalcum)
These are Ores you can find littered across the game's vast map. Though there are hundreds - akin to Zelda: Breath of the Wild's Korok Seeds in their frequency - there is a finite amount of these Ores to find.
If you want to specifically seek them out, then you can purchase an in-game map of Orichalcum locations from the game's Helix store (costing real world money) or view the maps later in this article - saving you a bit of cash.
Daily Contracts - 10 Orichalcum
These are the easiest and most reliable to get. Check notice boards in towns or on your ship and there will be certain contracts with a blue swirl next to them, indicating Orichalcum rewards.
They are essentially the same as other contracts, with simple tasks that can take just moments to complete - from clearing a nearby area of bandits, to paying someone some cash - and expire after one day. Get into the habit of checking in regularly and doing these and your Orichalcum will steadily increase.
Weekly Contracts - 50 Orichalcum
Also found at notice boards, weekly contracts don't require you complete a quest, but work towards a series of goals, such as completing a set number of Conquests or high level enemies within a region. For the amount of Orichalcum they give - 50 - we wouldn't recommend going out of your way to complete them as they will take far too long compared to doing five short daily quests. But if you are doing some of these goals anyway, it's a nice added extra.
Weekly events - TBC Orichalcum
Whereas Weekly Contracts are based on completing existing in-game content, these add new adversaries to the game's world. Starting Tuesday October 16th, each week a level 30 ship and mercenary will be added to the game. Taking them down will note only give you Orichalcum, but some other unique rewards.
So what are the fastest ways of getting Orichalcum? We recommend concentrating on Daily Contracts as you main source due to their regularity and speed, and also picking up any loose Orichalcum Ores if you are passing them by.
Speaking of which - what follows is a list of Orichalcum Ore locations throughout the world of Assassin's Creed Odyssey. Because the game is vast, it's split across multiple images.
Note that other collectable types - such as tablets from Tombs and Legendary Chests - are also featured in these images, but the Orichalcum Ores are otherwise indicated by the round blue shapes.
Achaia Orichalcum Ore locations
Anaphi Orichalcum Ore locations
Andros Orichalcum Ore locations
Argolis Orichalcum Ore locations
Arkadia Orichalcum Ore locations
Attika Orichalcum Ore locations
Boeotia Orichalcum Ore locations
Chios Orichalcum Ore locations
Delos Orichalcum Ore locations
Elis Orichalcum Ore locations
Euboea (and Skyros) Orichalcum Ore locations
Hydrea Orichalcum Ore locations
Keos Orichalcum Ore locations
Kephallonia Orichalcum Ore locations
Korinthia Orichalcum Ore locations
Kos Orichalcum Ore locations
Kythera Island Orichalcum Ore locations
Lakonia Orichalcum Ore locations
Lemnos Orichalcum Ore locations
Lesbos Orichalcum Ore locations
Lokris Orichalcum Ore locations
Makedonia Orichalcum Ore locations
Malis Orichalcum Ore locations
Megaris Orichalcum Ore locations
Melos Orichalcum Ore locations
Messara Orichalcum Ore locations
Messenia Orichalcum Ore locations
Mykonos Orichalcum Ore locations
Naxos Orichalcum Ore locations
Nisyros Orichalcum Ore locations
Looking for more help? Our main Assassin's Creed Odyssey guide and tips hub gives you an overview of our pages, while we also have all fifty-plus Ainigmata Ostraka puzzle locations and solutions, plus more on how to get the Assassin's Creed Odyssey best ending, a list of all Assassin's Creed Odyssey tomb solutions, the best weapons, armour, engravings, and legendary armour and weapons listed, the Kalydonian Boar strategy and location, Orichalcum locations and even help with Assassin's Creed Odyssey romance options. Elsewhere we can help with how to earn money and Drachmae fast in Assassin's Creed Odyssey, how to earn XP and level up fast in Assassin's Creed Odyssey, and our picks for the best side quests in Assassin's Creed Odyssey.