Silica pearls are the cheapest valuable resource in ARK: 0.02 weight, 100 per stack, a full stack weighing 2.0. Nothing else that feeds the electronics tier is that light. The catch is that electronics eat them three at a time, and the chip you are building weighs 0.01 and is worth 700 hexagons.
Every number below comes from the cached fields in ark-resources.json.
The pearl card
| Property | Value |
|---|---|
| Rarity | Uncommon |
| Weight | 0.02 |
| Stack size | 100 |
| Weight of a full stack | 2.0 |
| Hexagon value | 125 |
| Exchange quantity | 5 |
| Renewable | Yes |
| Mobile cost | 50 charges |
Silica pearls are beads made almost entirely of silicon, found in water bodies. — ARK Wiki
That sentence is the entire supply chain in one line. Pearls are not a gemstone tier; they are refined silicon that happens to look like jewellery, and the game sends you underwater to get them because the seafloor is where the silicon is.
Three pearls, one chip
Electronics is the only early consumer that matters, and its recipe is unusually tight:
| Electronics input | Quantity |
|---|---|
| Silica Pearls or Silicate | 3 |
| Metal Ingot or Scrap Metal Ingot | 1 |
| Level | 48 |
| Engram points | 6 |
| Crafting time | 2 seconds |
| Crafting XP | 0.76 |
| Electronics weight | 0.01 |
| Electronics stack | 100 |
| Electronics hexagons | 700 |
Run the weight through it. Three pearls are 0.06 weight and one ingot is 1.0, so a chip’s inputs weigh 1.06 and the chip itself weighs 0.01. The ingot is the heavy half by a factor of sixteen — which means a pearl run and a metal run are not competing for the same saddle space. Pearls are effectively free cargo.
Now run the hexagon value. Three pearls at 125 are 375, the ingot is 195, so 570 hexagons of input produce a 700-hexagon chip. The conversion adds 130 hexagons of value, which is the dataset’s way of saying electronics are meant to be crafted, not bought.
Where pearls sit against the other cave resources
| Resource | Weight | Stack | Hexagons | Job |
|---|---|---|---|---|
| Silica Pearls | 0.02 | 100 | 125 | Electronics |
| Silicate | 0.02 | not listed | not listed | Electronics substitute |
| Crystal | 1.0 | 100 | 115 | Fabricator, C4, lenses |
| Obsidian | 1.0 | 100 | not listed | Polymer |
The comparison is brutal in pearls’ favour. A stack of crystal weighs 100, a stack of pearls weighs 2. You can carry fifty stacks of pearls for the weight of one crystal stack, and both are cave resources you gather on the same trip.
Silicate, from Extinction, is the direct substitute at the same 0.02 weight. If you play that map, hardened silicon deposits replace the diving entirely — the recipe slot reads “Silica Pearls or Silicate”.
The diving problem is a logistics problem
The dataset does not publish node yields, so the useful planning question is what a trip has to carry. Three facts shape it:
- Weight is not the limit. 2.0 per stack means the constraint is inventory slots and lung capacity, not carry weight.
- Electronics are the sink. 100 electronics needs 300 pearls, which is three stacks and 6 weight.
- Pearls share a biome with crystal and oil. One seafloor route can fill three needs, which is why the exploration guide treats underwater runs as a single loop rather than three trips.
An aquatic mount changes the risk profile more than the yield: an Ichthyosaurus is cheap and fast, and speed is what turns a drowning hazard into a route you can repeat. For a hauler that survives the deep water, the Basilosaurus is the standard answer.
What the pearls are actually for
Electronics is the gate to everything with a circuit in it. The Chemistry Bench alone needs 250 Electronics — that is 750 pearls, seven and a half stacks, 15 weight. The Fabricator needs 15 Crystal and no electronics, which is why the bench is the real pearl sink in the mid-game.
| Structure | Electronics | Pearls needed | Pearl weight |
|---|---|---|---|
| Chemistry Bench | 250 | 750 | 15 |
| Fabricator | 0 | 0 | 0 |
That single line explains a common stall: a tribe builds the Fabricator, feels rich, and then discovers the bench wants 750 pearls on top of 250 polymer, 250 crystal and 250 paste. The pearl number is the smallest of those by weight and the largest by dive time.
The weight argument, in one trip
The most useful comparison on this page is what the same saddle load buys in different resources. A 100-weight cargo budget is a normal mid-game flyer allowance:
| Cargo | Units at 100 weight | Electronics it can make |
|---|---|---|
| Silica pearls | 5,000 | 1,666 |
| Crystal | 100 | 0 |
| Obsidian | 100 | 0 |
| Metal ore | 100 | 50 (two ore per ingot) |
Five thousand pearls is fifty stacks — more slots than any inventory holds — which is the real lesson. The pearl half of electronics is never the problem; the ingot half and the slots are. A player who fills a water mount with pearls and forgets the metal comes home with the cheap half of the recipe.
That has a direct consequence for how you plan a dive. Take one stack of ingots per stack of pearls. Three pearls make one chip, so 300 pearls plus 100 ingots is 100 electronics — a clean, repeatable ratio that fits in a reasonable inventory and finishes the moment you surface.
A pearl routine
- Dive with empty slots. Pearls weigh nothing; slots are the currency. Leave the metal at home.
- Bank 300 before you need them. That is 3 stacks, 6 weight, and exactly 100 electronics.
- Craft chips immediately. A pearl is 125 hexagons; a chip is 700. Converting is always correct.
- Check the map. On Extinction, Silicate at the same 0.02 weight removes the dive entirely.
The resources strategy page covers how to sequence the electronics chain against metal and paste, and the resources tier list ranks pearls against the rest of the set.