Indium

What Is Indium

Indium is element 49 — a soft, silvery-white metal so rare in the earth's crust that it was not discovered until 1863, when two German chemists identified it by an unusual indigo-violet spectral line that gave the element its name. It is not found in concentrated ore deposits of its own. It does not have a mine. Indium exists in trace quantities inside zinc ore — typically 50–200 parts per million — and is recovered as a byproduct when zinc ore is smelted. If you want indium, you smelt zinc. That structural fact determines everything about its supply.

The dominant use — approximately 60–70% of global indium consumption — is ITO (indium tin oxide — a thin, transparent, electrically conductive coating deposited on glass or film that simultaneously transmits light and conducts electricity). ITO is what makes touchscreens work. Every smartphone, every tablet, every laptop trackpad, every flat-panel display, every EV dashboard, every ATM screen — the glass that responds when you touch it has a layer of ITO on its surface. The coating is invisible. It is typically less than 200 nanometres thick — thinner than a single wavelength of visible light. And it is the reason your finger touching cold glass produces a response rather than nothing.

Beyond touchscreens: indium is used in CIGS solar cells (copper indium gallium selenide — a thin-film photovoltaic technology that deposits semiconductor layers directly onto glass or flexible substrates, achieving high efficiency without the silicon wafer manufacturing process), in specialty semiconductors for high-frequency and infrared applications, in LED lighting, and in low-melting-point industrial alloys.

The CIGS application is growing. Thin-film solar — which uses indium alongside gallium and tellurium — is expanding as the solar buildout scales globally. Unlike silicon solar panels, CIGS cells perform better in diffuse light and high-temperature conditions, making them suited for specific climates and building-integrated applications. As solar installations multiply, CIGS demand adds a second structural demand stream on top of the touchscreen anchor.

Where It Comes From

China accounts for approximately 55–60% of global primary indium production — the highest single-country concentration of any major indium-consuming application's input material. The dominance reflects two converging facts: China has the largest zinc smelting capacity in the world, and Chinese zinc ores tend to have relatively high indium content. More zinc smelting plus higher indium yield per tonne equals structural supply concentration that cannot be easily replicated elsewhere.

Outside China, meaningful indium production occurs in South Korea, Japan, Canada, and Belgium — primarily as byproducts of zinc or lead-zinc smelting operations. These producers supply a portion of Western demand, but none at the scale required to offset Chinese export restrictions when they tighten. Indium recovery from zinc smelting is also technically complex — not all zinc smelters have the downstream processing capability to recover and refine indium to the 99.995% purity required for ITO production. The refining step further concentrates supply toward facilities that have made that specific capital investment.

China introduced export licensing requirements for indium in August 2023 — the same announcement that covered gallium and germanium — as part of a coordinated critical minerals export control policy. The requirement does not ban exports outright; it requires government approval for each shipment. But the approval requirement created immediate friction, slowed export flows, and sent prices from approximately $250 per kilogram toward $500 per kilogram within twelve months. The East-West price spread — currently approximately $92 per kilogram between Chinese domestic and Western benchmark prices — is the export licence access premium made visible in a single number.

The byproduct constraint is the structural ceiling on any supply response. When indium prices rise, there is no mechanism to build a new indium mine and increase supply. The only way to increase indium supply is to smelt more zinc — and zinc smelting decisions are driven by zinc economics, not indium economics. If zinc demand is weak, zinc smelting contracts, and indium supply contracts with it regardless of how high the indium price climbs. The indium market cannot clear through the normal commodity mechanism of high prices signalling new supply. It is permanently supply-inelastic to its own price.

Why It Matters Right Now

The demand side is running two structural growth stories simultaneously.

The first is display and touchscreen expansion. The global installed base of ITO-dependent devices is not shrinking — it is growing. Every new smartphone sold, every new EV with a touchscreen dashboard, every new digital signage installation, every new industrial control panel adds incremental ITO demand. The EV transition is particularly relevant: a premium electric vehicle today may carry multiple large touchscreen displays where a conventional vehicle had analogue gauges. Each additional display adds ITO consumption. As EV penetration rises globally, display area per vehicle rises with it, and indium demand rises with that.

The second is thin-film solar. CIGS solar cells use indium alongside gallium and tellurium and are gaining share in specific applications — building-integrated photovoltaics (solar cells embedded directly into building materials such as glass facades and roofing panels), flexible solar for portable and specialty applications, and utility-scale installations in high-temperature environments where CIGS outperforms conventional silicon. The IEA projects solar installations to continue accelerating through the 2020s. Each gigawatt of CIGS capacity represents significant indium demand.

The supply constraint is permanent and structural, not cyclical. China controls the dominant production share. The export licence regime since 2023 has split the market into domestic Chinese pricing and Western pricing with a persistent access premium. The byproduct dependency means supply cannot respond to price signals in the way normal commodities do. If zinc demand weakens globally — as it has during various points in the current economic cycle — indium supply tightens even when indium demand is growing.

The price has reflected this structural tightness over five years: up approximately 73% since the start of 2024, up approximately 209% since 2020. A record above $685 per kilogram was set earlier in 2026. The current domestic China benchmark at approximately $561 per kilogram represents a modest pullback from that record — but still more than double the pre-export-licence baseline.

The Metal With No Mine

Here is the contradiction at the center of the indium market: indium is the only critical mineral on ScarceEarth whose supply is structurally incapable of responding to its own price signal. Every other metal covered on this platform — however supply-constrained — can in theory be addressed by building new mines, processing facilities, or refineries if the price is high enough and the political will is present. Indium cannot.

Supply is permanently locked to zinc production. Zinc smelting is driven by zinc demand. When indium prices rise, no new indium supply arrives — because there is nowhere for it to come from. When zinc demand weakens and smelting contracts, indium supply falls regardless of what the indium price is doing. The market has no self-correcting mechanism on the supply side. It can only tighten or loosen with zinc production cycles, Chinese export policy, and the downstream recovery rates at the small number of non-Chinese smelters that have invested in indium processing capability.

Western attempts to address this dependency face the same structural wall. You cannot build a new indium supply chain by finding new indium deposits — they do not exist in extractable concentrations. You can invest in improving recovery rates at existing zinc smelters in allied jurisdictions. You can stockpile. You can develop ITO recycling — recovering indium from scrapped displays is technically feasible, economically marginal at current prices, and not yet operating at meaningful scale. None of these are the clean supply chain solution that building a new mine provides for lithium or rare earths.

The standard policy toolkit that Western governments have applied to critical minerals — fund new projects, build domestic processing capacity, create allied-jurisdiction supply chains from scratch — is only partially applicable to indium. The geology does not permit the full solution. The most honest description of the Western position is: manage the dependency, because you cannot eliminate it.

What the Price Has Done

For most of the period from 2015 to 2022, indium traded in the $150–250 per kilogram range — adequate supply from Chinese zinc smelters meeting stable touchscreen demand, with no policy catalyst to disturb the equilibrium. The price was low enough that nobody built strategic reserves or diversified supply chains. The dependency accumulated invisibly.

August 2023 was the inflection. China's export licensing requirement for indium — announced alongside gallium and germanium as part of the same coordinated critical minerals export control policy — created immediate friction in trade flows. Western buyers who had been sourcing indium through normal commercial channels suddenly faced an approval requirement on every shipment. The market repriced immediately. From approximately $250 per kilogram before the announcement, indium surged toward $500 per kilogram within twelve months. The 2023 annual gain was approximately 27%, followed by an additional 23% gain through 2024 as the licence regime proved persistent and demand from EV displays and solar continued to grow.

The year 2026 opened with indium at approximately $481 per kilogram — already double the pre-licence baseline. Earlier in 2026, the domestic China price set a record above 4,700 yuan per kilogram — approximately $685 per kilogram at prevailing exchange rates.

As of May 1, 2026: the SMM domestic China benchmark sits at $560.91 per kilogram, down modestly from the record but up approximately 16.72% year to date from the January open. Western benchmarks track slightly above: approximately $652.50 per kilogram in the United States and $657.50 per kilogram in Europe. The approximately $92 per kilogram East-West spread is the export licence access premium in concrete dollar terms — Chinese industrial buyers transact at the domestic benchmark; Western industrial buyers pay the licence premium on top. Western retail at approximately $972.20 per kilogram adds dealer margin above the Western industrial benchmark for physical investment buyers.

Since January 2020, the Western retail price has risen approximately 209%. The pre-export-licence baseline of approximately $250 per kilogram is not coming back. The licences are still in place.