Indium (symbol: In, atomic number 49) is a soft, silvery-white post-transition metal and one of the most commercially significant critical minerals in modern electronics manufacturing. Despite its low public profile, indium is the material behind virtually every touchscreen, LCD monitor and flat panel display in use today. As of March 2026, indium 99.995% traded at $607.12/kg on domestic Chinese markets per Shanghai Metals Market (SMM).
Indium is not a rare earth element, but it is classified as a critical mineral by the United States, European Union and Japan — a designation reflecting its economic importance and supply concentration risk rather than its chemistry.
What Is Indium Used For?
The dominant commercial application for indium is indium tin oxide (ITO), a transparent conducting film that is sputtered onto glass to create the electrode layers in LCD screens, touchscreens, flat panel displays and OLED panels. Every smartphone, tablet, laptop and flat-screen monitor contains ITO. There is currently no commercially viable substitute that matches ITO’s combination of electrical conductivity and optical transparency at scale.
The second major application is copper indium gallium selenide (CIGS) thin-film photovoltaic cells, used in flexible and building-integrated solar applications. CIGS cells offer advantages in low-light performance and substrate flexibility, and indium demand from this sector is forecast to grow alongside solar deployment targets in the US, EU and Japan.
Semiconductor and LED compound applications — including indium phosphide (InP) and indium gallium nitride (InGaN) — represent a smaller but growing share of demand, particularly in high-frequency telecommunications and power electronics.
How Is Indium Produced?
No primary indium mines exist anywhere in the world. Indium is recovered exclusively as a byproduct of zinc smelting — and to a lesser extent from lead and copper processing. Indium occurs at trace concentrations in zinc sulfide (sphalerite) ores and is captured during the refining stage.
This byproduct-only supply structure has a critical implication: indium output is tied to zinc production economics, not indium demand. When zinc smelting contracts — due to low zinc prices, energy costs or feed shortages — indium supply tightens regardless of end-user demand. This creates a structural supply rigidity that is difficult to resolve through investment alone.
According to the USGS Mineral Resources Program, global indium production is estimated at 900 tonnes per year of primary refined material, with identified resources concentrated in zinc-producing regions.
Who Controls the Indium Supply Chain?
China accounts for roughly 55–60% of global refined indium output, processing indium-bearing zinc concentrates at smelters in Yunnan, Hunan and Guangdong provinces. South Korea and Japan are significant secondary producers, refining indium as a byproduct of zinc operations and feeding directly into domestic electronics manufacturing supply chains.
Canada contributes via Teck Resources‘ zinc operations, and Belgium via Nyrstar‘s smelting complex, though both represent smaller volumes relative to China’s output. Western producers have limited ability to rapidly scale indium recovery without corresponding increases in zinc throughput.
China has previously applied export restrictions to indium, and the metal sits alongside gallium and germanium in Beijing’s strategic export licensing framework. For current benchmark pricing on China-controlled technology metals, see the germanium price page.
Indium Price and Market Structure
As of March 2026, indium 99.995% was quoted at $607.12/kg on domestic Chinese markets and $535/kg on a CIF basis per SMM data. The unusual dynamic — where the CIF Western delivery price sits below domestic Chinese pricing — reflects differences in grade specifications, contract structures and VAT treatment rather than a genuine export discount.
For current indium spot price data, updated monthly, see the indium price page.
Price volatility in indium is driven less by demand fluctuations than by zinc market dynamics, Chinese export policy and inventory movements at South Korean and Japanese smelters. The ITO recycling industry — which recovers indium from LCD panel manufacturing waste — provides a secondary supply buffer but remains insufficient to materially reduce dependence on primary Chinese output.
Critical Mineral Status and Supply Risk
Indium appears on the US Critical Minerals List, the EU Critical Raw Materials list and Japan’s critical minerals strategy. The rationale in each case is consistent: high economic importance combined with supply concentration in a single country and no viable substitution pathway in the near term.
ITO alternatives — including carbon nanotube films, graphene electrodes and conductive polymers — remain either too expensive, too fragile or insufficiently transparent for mass production. Research into substitute materials is active but commercial deployment is not expected to reduce ITO demand materially before 2030.
ITO recycling from manufacturing scrap is growing in Japan and South Korea, where precision recovery from sputtering targets recaptures a meaningful fraction of indium. However, end-of-life LCD recycling infrastructure remains underdeveloped globally, and recovery rates from consumer electronics are low.
For investors and procurement teams, indium’s combination of byproduct-only supply, China concentration and ITO lock-in positions it as one of the higher-risk critical minerals in the electronics supply chain.
What is indium used for?
Indium’s primary use is in indium tin oxide (ITO), a transparent conducting film applied to LCD screens, touchscreens and flat panel displays. It is also used in CIGS thin-film solar cells, indium phosphide semiconductors and LED compounds. Every smartphone and flat-screen monitor contains indium.
Where does indium come from?
There are no primary indium mines anywhere in the world. Indium is recovered exclusively as a byproduct of zinc smelting, with smaller volumes from lead and copper processing. Supply is therefore tied to zinc production economics rather than indium demand.
Which country produces the most indium?
China accounts for approximately 55–60% of global refined indium output. South Korea and Japan are significant secondary producers. Canada (Teck Resources) and Belgium (Nyrstar) contribute smaller volumes.
Why is indium classified as a critical mineral?
Indium is on the US Critical Minerals List, EU Critical Raw Materials list and Japan’s critical minerals strategy because of its high economic importance to electronics manufacturing, its concentration of supply in China, and the lack of commercially viable substitutes for indium tin oxide in display technology.
What is the current indium price?
As of March 2026, indium 99.995% was trading at $607.12/kg on domestic Chinese markets and $535/kg on a CIF basis, according to Shanghai Metals Market (SMM). The indium price page is updated monthly with current benchmark data.
