Germanium

What Is Germanium

Germanium is element 32 — a lustrous, grey-white metalloid (an element with properties between a metal and a non-metal) that sits directly below silicon on the periodic table and shares many of its semiconductor properties, but with characteristics that make it superior in specific applications. It was predicted to exist by Dmitri Mendeleev in 1871 before it was discovered — one of the first elements whose properties were forecast from gaps in the periodic table before the element itself was found.

Germanium's industrial importance rests on two properties: it is transparent to infrared radiation in wavelengths that glass and silicon are not, and it is a high-mobility semiconductor that enables faster electron movement than silicon at equivalent scales. The first property makes germanium the primary material for infrared optics — the lenses and windows in thermal imaging cameras, night-vision systems, and heat-seeking missile guidance systems. Every forward-looking infrared (FLIR) system on a military aircraft, every thermal scope on a sniper rifle, every missile seeker head that homes on heat — uses germanium optics. There is no cost-effective substitute at the required performance level.

The second property drives germanium's use in fibre optic cables (germanium dioxide is used to dope — deliberately introduce impurities into — the silica glass core of optical fibres to increase their refractive index and improve light transmission efficiency) and in high-efficiency solar cells for space applications and concentrating photovoltaic systems. The AI infrastructure buildout has made fibre optic demand a direct and growing germanium demand driver — every data center connected to every other data center by high-bandwidth optical fibre is consuming germanium.

Like gallium and indium, germanium is not mined directly. It is recovered as a byproduct of zinc smelting and coal combustion ash processing. The byproduct constraint is permanent: supply grows only as fast as zinc smelting grows.

Where It Comes From

China accounts for approximately 60–70% of global germanium production — built on dominant zinc smelting capacity and the deliberate downstream integration of germanium recovery and refining. Chinese germanium refiners produce germanium dioxide, germanium tetrachloride, and high-purity germanium metal at scales that no other country approaches. Outside China, meaningful production occurs in Russia (now largely inaccessible due to sanctions), Canada, Belgium, and the United States — all as byproducts of zinc or coal processing.

China introduced export licensing requirements for germanium in August 2023 alongside gallium. The December 2024 escalation extended the controls to an outright ban on germanium exports to the United States. The November 2025 suspension through November 27, 2026 applies to germanium alongside gallium and antimony.

The defense implications of germanium supply concentration have been recognised for longer than gallium. The US Defense Logistics Agency has maintained strategic stockpiles of germanium specifically because of its irreplaceable role in infrared optics for military systems. But stockpile levels are not public, and the rate at which defense procurement draws down strategic reserves relative to replenishment is not disclosed.

Why It Matters Right Now

The defense application is the most acute. Infrared optics for military systems are germanium-dependent and there is no qualified substitute at the performance levels required. The F-35, Apache helicopter, Predator drone, and virtually every other platform in the US military inventory with thermal imaging capability uses germanium optics. Procurement of new platforms and maintenance of existing ones both draw on germanium supply. The Defense Logistics Agency stockpile provides a buffer — but a finite one.

The AI infrastructure angle is less obvious but structurally significant. The $690 billion hyperscaler buildout — the data center construction programs of Microsoft, Google, Amazon, and Meta — requires massive quantities of fibre optic cable to connect servers within data centers and data centers to each other. Each kilometer of high-performance optical fibre contains germanium. At the scale of the current AI infrastructure buildout, the aggregate germanium demand from fibre optic deployment is a meaningful and growing share of total consumption.

The space solar application adds a third demand layer. High-efficiency triple-junction solar cells — the photovoltaic technology used on satellites and spacecraft, where efficiency per unit weight matters more than cost — use germanium as the substrate material. As satellite constellations expand (Starlink, OneWeb, and their competitors each involve thousands of satellites), germanium demand from space solar grows with them.

The Floor Has Moved

The contradiction in the germanium market runs deeper than the suspension timeline. The price corrected from its post-ban peak when the suspension was granted. But the correction did not return to the pre-2023 baseline. The floor has moved — permanently, in the view of most market participants — because the structural conditions that drove the price above the baseline have not changed and cannot be changed by a suspension.

Before August 2023, germanium dioxide traded in the $800–1,000 per kilogram range. The export licensing controls drove prices above $1,500 per kilogram. The December 2024 ban drove a second surge. The November 2025 suspension brought prices back — but to approximately $2,417 per kilogram on the SMM domestic China benchmark, not to $800. The suspension normalised the acute shortage. It did not normalise the price.

That price floor is structural. Western buyers now understand the supply risk. Strategic stockpiling has created incremental demand above the pure industrial demand level. Defense contractors have built access risk into their procurement pricing. The price at $2,417 per kilogram represents the market's assessment of the permanent risk premium above the pre-control baseline — a premium that will not compress to zero even if the suspension is extended, because the underlying supply concentration has not changed.

What the Price Has Done

Through most of the period before 2023, germanium dioxide traded in the $800–1,000 per kilogram range on the SMM domestic China benchmark — reflecting adequate supply from Chinese zinc smelting and steady demand from infrared optics and fibre optics. The price was stable enough that Western buyers did not build significant strategic reserves.

August 2023: China's export licensing announcement drove immediate price pressure. By late 2023, prices had climbed toward $1,200–1,500 per kilogram as Western buyers restocked and priced in access risk. The 2023 and 2024 gains were sustained rather than spike-and-correct — the licensing regime proved persistent and demand from AI-driven fibre optic buildout added incremental pressure.

December 2024: The outright US ban drove a second surge. Prices reached new highs above $2,000 per kilogram on the domestic China benchmark as the severity of the restriction became clear. The November 2025 suspension began moderating prices as licensed material resumed flowing. By early 2026, the market had partially stabilised.

May 2026: SMM domestic China germanium ingot 99.999% sits at approximately $2,417.74 per kilogram — the third consecutive monthly gain of approximately 18%, driven by consistent purchasing demand from fibre optic, semiconductor, and infrared optics applications. The price is well above the pre-control baseline but below the December 2024 peak. The suspension is working. The floor is higher than before the controls began.