Element 32 · Metalloid
Germanium
Germanium powers fibre optic networks and infrared imaging systems.
Element Facts
SYMBOL
Ge
ATOMIC NO.
32
ATOMIC WEIGHT
72.630
CATEGORY
Metalloid
PERIOD
Period 4
GROUP
Group 14
Historical Uses
Germanium was famously predicted in 1871 by Dmitri Mendeleev as “eka-silicon” — he described its expected properties from the gaps in his periodic table. Clemens Winkler discovered it in 1886 in a silver ore called argyrodite, confirming Mendeleev’s predictions in remarkable detail. Germanium’s first transformative application was as the semiconductor material in the world’s first transistors (Bell Labs, 1947), before silicon took over in the 1960s.
Current Uses
About 60% of germanium today goes into fibre optic cables (as germanium dioxide added to the glass core to increase refractive index). Other major uses include infrared optics for thermal imaging and night-vision equipment, solar cells for satellite power systems, and as a catalyst in PET plastic production. About 60% of global supply comes from zinc smelting byproducts in China.
Not Commercially Viable for Scrap
Why QuickStop Metals doesn’t buy Germanium:
Germanium appears in highly specialised products at trace concentrations and is not recovered from general scrap. Its extraction requires specialist hydrometallurgical processes at dedicated zinc or coal fly-ash processing facilities, which are wholly different from scrap metal operations.
Price Context
Germanium metal trades at approximately £600–1,200/kg. China applied export controls on germanium and gallium from August 2023, causing significant price volatility. Not a standard scrap yard material.