Ytterbium (Yb): Uses, Supply and Investment Guide
Ytterbium is a heavy rare earth used in high-power fiber lasers for industrial cutting and welding. Ytterbium is also used in some of the most precise atomic clocks and as the starting material for producing the medical isotope lutetium-177.
| Symbol | Yb |
|---|---|
| Atomic number | 70 |
| Group | Heavy rare earth (HREE) |
| Magnet rare earth | No |
| Main uses | Fiber lasers; Atomic clocks; Medical isotope production; Alloys and gauges |
| Main sources | Heavy rare earth ores, mainly ionic adsorption clays in China and Myanmar |
| China export status | October 2025 controls, currently suspended |
| Price data | No public benchmark |
Ytterbium Price
There is no public benchmark for ytterbium; it trades in small volumes.
For the rare earths that do have public price series, see the rare earth price charts, and how rare earth pricing works for why most rare earths have no transparent benchmark.
What Is Ytterbium Used For?
- Fiber lasers. Ytterbium-doped fiber lasers are the workhorse of industrial metal cutting, welding and marking.
- Atomic clocks. Ytterbium optical lattice clocks are among the most accurate clocks built.
- Medical isotope production. Enriched ytterbium-176 is irradiated to make lutetium-177 for cancer treatment.
- Alloys and gauges. Ytterbium improves some stainless steels and is used in stress gauges.
Where Does Ytterbium Come From?
Ytterbium is a minor heavy rare earth separated mainly in China. Enriched ytterbium isotopes for medical use come from specialist isotope producers.
China export controls on ytterbium
China announced export controls on this element in October 2025, together with holmium, erbium, thulium, europium and ytterbium, then suspended them. The suspension runs to at least 10 November 2026; the US says it has been extended to 10 January 2027, but China has not published matching text.
How to Invest in Ytterbium
Ytterbium has no dedicated investment vehicle. Laser manufacturers use it, but it is a small part of their costs, and it is a minor by-product for separators.
For broader rare earth exposure, see the rare earth stock watchlist or the rare earth ETF comparison.
Ytterbium Investment Risks
- Small market with limited price transparency.
- Supply depends on Chinese separation and on the status of suspended export controls.
Ytterbium FAQ
What is ytterbium used for?
Ytterbium is used mainly in ytterbium-doped fiber lasers for industrial cutting and welding. It is also used in atomic clocks and to produce the medical isotope lutetium-177.
How is ytterbium used in medicine?
Ytterbium is used in medicine as a target material: enriched ytterbium-176 is irradiated in reactors to produce lutetium-177, a radioisotope used in cancer therapy.
Does China control ytterbium exports?
China announced export controls on ytterbium in October 2025 and then suspended them. The suspension runs to at least 10 November 2026; the US says it has been extended to January 2027.
Other Heavy rare earth (HREE) Elements
This page is research, not investment advice. See the disclaimer.