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Arc Raiders
ARC Raiders is a multiplayer extraction adventure, set in a lethal future earth, ravaged by a mysterious mechanized threat known as ARC. Enlist as a Raider and…
If you want to get Red Coral Jewelry in ARC Raiders quickly, farm indoor containers in Buried City first. The item is a blue-rarity trinket and shows up most reliably in drawers, cabinets, and shelves inside Residential, Old World, and Commercial areas. The best-known sub-areas are Santa Maria Houses and Abandoned Highway Camp, with Grandioso Apartments, Plaza Rosa, Piazza Arbusto, and other interior-heavy stops also worth clearing. If you are targeting the Projects → Avian Alarm → Stage 5 turn-in, you need 3 Red Coral Jewelry, so the goal is not one lucky drop but a repeatable route that hits as many furniture containers as possible per raid.
The fastest version of the farm is simple: choose Buried City when possible, prioritize Night Raid, Electromagnetic Storm, or Cold Snap conditions, and loot every apartment, house, and storefront interior instead of wasting time on open ground. This method works the same on PC and console because it is about route efficiency and container selection, not platform-specific tech.
Buried City stands out because it stacks a lot of trinket containers close together. You are not farming enemies here; you are farming furniture density. That matters, because Red Coral Jewelry is tied much more to searchable interiors than to combat loot.
The common mistake in Buried City is moving too fast. Red Coral Jewelry does not announce itself with a special world model before you search a container, so skipping “boring” furniture is exactly how good runs turn into empty ones. If your route feels dry, it is usually because too many drawers and shelf units were ignored, not because you picked the wrong map.
Focus on containers that fit the trinket loot pool. In practice, that means the small indoor storage pieces that line homes, apartments, and shops.

What you should not do is turn the farm into a combat grind. Current loot guidance points to container farming, not a specific enemy drop source, so if your whole loop is built around killing Arcs, you are making the job slower. Fight when you need to clear access or survive the extraction, but let the route revolve around searchable interiors.
Buried City is the best overall map, but it is not the only one. If you need a fallback because of map rotation, pressure from other players, or a bad insertion, Red Coral Jewelry can also appear in similar interior container clusters on other maps.
These are usable alternatives, but they are usually second choice if your only goal is item farming for Avian Alarm. Buried City simply gives you the cleanest concentration of the right lootable spaces.

If you can choose your moment, target Night Raid, Electromagnetic Storm, and Cold Snap runs. These conditions are the ones most often associated with better trinket farming across containers, which matters when you need three copies of the same blue item. Even if the route stays identical, the return on each sweep is better when the condition supports loot-heavy searching.
It also helps to enter with the farm in mind. Bring enough inventory space to hold multiple trinkets and the other project items you may pull along the way. Do not clog your pack with low-priority scrap if Red Coral Jewelry is the reason you queued. If you find one or two pieces early, start thinking about a safer extraction path instead of greed-clearing every last building.
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Beachcombing on Riven Tides can produce Red Coral Jewelry, but it is widely considered the slow way to do it. The shoreline loot pool is broad, the search area is spread out, and the method is much less efficient than chaining interior containers in Buried City. Beachcombing makes more sense if you are already combining goals, especially if you also want other event-related loot such as ship-model-type collectibles. It is not the best solo route if Red Coral Jewelry is the main target.

You may also see mention of Bird City chimneys as a source. That does appear in some coverage, but it is not as consistently backed up as the standard container route. The safe read is to treat Bird City chimney finds as a bonus opportunity when the condition appears, not as the core farm you plan around.
The main reason most players are chasing it is Avian Alarm, added during the Riven Tides update. For Stage 5, you need 3x Red Coral Jewelry, 2x Turbine Compressors, 4x Roots, and 1x Sirena Dorata Ship Model. That is why farming only one jewelry piece is not enough; you want a repeatable route you can run until the full set is done. If you pull extra copies before finishing the rest of the project materials, they are usually worth holding onto rather than discarding for minor filler loot.
If you stay on Buried City, clear interiors thoroughly, and treat Beachcombing as a side activity instead of the plan, Red Coral Jewelry becomes a route problem rather than an RNG mystery. The players who finish Avian Alarm fastest are usually the ones opening more of the right containers, not the ones taking more fights.