# Cesium Price per kg (United States)

As of October 2026, the US benchmark price of cesium is $104,000 per kg contained.

Source: https://www.stockatomics.com/commodities/cesium-price-us
Category: Critical Minerals (https://www.stockatomics.com/commodities/critical-minerals)
Lists: US Critical Minerals List

## Key figures

| Figure | Value |
| --- | --- |
| Price per kg contained | $104,000 |
| Price type | Stockatomics monthly benchmark |
| Price month | October 2026 |
| 1-month change | - |
| 6-month change | - |
| 1-year change | +6.1% |
| 5-year change | - |
| 12-month high | $104,000 |
| 12-month low | $104,000 |
| Last updated | 18 October 2026 |

## Price summary

In the past year the monthly price has moved between $104,000 and $104,000. Measured over the past year, cesium is +6.1%.

## Cesium monthly prices

USD per kg contained, newest first.

| Month | Price | Change |
| --- | --- | --- |
| October 2026 | $104,000 | 0.0% |
| September 2026 | $104,000 | 0.0% |
| August 2026 | $104,000 | 0.0% |
| July 2026 | $104,000 | 0.0% |
| June 2026 | $104,000 | 0.0% |
| May 2026 | $104,000 | 0.0% |
| April 2026 | $104,000 | 0.0% |
| March 2026 | $104,000 | 0.0% |
| February 2026 | $104,000 | 0.0% |
| January 2026 | $104,000 | 0.0% |
| December 2025 | $104,000 | 0.0% |
| November 2025 | $104,000 | 0.0% |
| October 2025 | $104,000 | 0.0% |
| September 2025 | $104,000 | 0.0% |
| August 2025 | $104,000 | 0.0% |
| July 2025 | $104,000 | 0.0% |
| June 2025 | $104,000 | 0.0% |
| May 2025 | $104,000 | 0.0% |
| April 2025 | $104,000 | 0.0% |
| March 2025 | $104,000 | 0.0% |
| February 2025 | $104,000 | 0.0% |
| January 2025 | $104,000 | +6.1% |
| December 2024 | $98,000 | 0.0% |
| November 2024 | $98,000 | 0.0% |
| October 2024 | $98,000 | 0.0% |
| September 2024 | $98,000 | 0.0% |
| August 2024 | $98,000 | 0.0% |
| July 2024 | $98,000 | 0.0% |
| June 2024 | $98,000 | 0.0% |
| May 2024 | $98,000 | 0.0% |
| April 2024 | $98,000 | 0.0% |
| March 2024 | $98,000 | 0.0% |
| February 2024 | $98,000 | 0.0% |
| January 2024 | $98,000 | - |

## What cesium is used for

Cesium (Cs) is one of the rarest traded metals and the most reactive of all. Its largest use is **cesium formate brine**, a dense, solids-free drilling and completion fluid for high-pressure, high-temperature oil and gas wells, which operators can recover and reuse. Its most famous use is in **atomic clocks**: the second itself is defined by the oscillation of the cesium-133 atom, and cesium clocks underpin satellite navigation, telecoms and financial timestamping.

### Other uses

- Photoelectric cells and night-vision devices
- Catalysts and specialty chemicals
- Research in ion propulsion and quantum technologies
- Specialty glass

## Cesium supply and demand factors

The cesium market is tiny and very concentrated. Commercially workable pollucite, its main ore, is found in only a few pegmatites, and one producer controls most of the supply. Demand comes mainly from cesium formate drilling fluid, much of it leased and recycled, and from atomic clocks and research. Prices are negotiated privately and are rarely published.

### What moves the price

- Output from the few pollucite mines
- Deep, high-pressure drilling activity
- Recycling and leasing of formate brines
- Demand for atomic clocks and research uses

## Cesium price history

Cesium is sold by a very small number of producers to specialised customers, mostly under private agreements, so prices have been high and stable rather than volatile.

As of October 2026, the Stockatomics benchmark price is $104,000 per kg contained.

## Where cesium is produced

Cesium comes from pollucite, found in only a few pegmatite deposits. The **Tanco** mine in Manitoba, **Canada**, has historically supplied much of the world, with smaller sources in Zimbabwe and other parts of Africa. Processing into cesium compounds is concentrated in China.

## Why cesium is a critical mineral

Cesium is on the **US critical minerals list**. Commercial deposits are extremely rare, one producer has historically dominated supply, and drilling fluids and atomic clocks have no simple substitute. The United States imports all of its cesium.

## How the cesium benchmark price is calculated

Stockatomics publishes a US benchmark price for cesium in US dollars per kg contained, reading as of October 2026. The price is for cesium metal, not for formate brine or for an atomic-clock component. The market is small and specialised, so the price moves less often than those of exchange-traded metals.

## Cesium stocks

| Company | Ticker | Exchange | Role |
| --- | --- | --- | --- |
| [Sinomine Resource Group](https://www.stockatomics.com/companies/sinomine-resource-group-she-002738) | 002738 | SHE | Producer |

## FAQ

### What is the price of cesium per kg today?

As of October 2026, the US benchmark price of cesium is $104,000 per kg contained. Stockatomics updates it every month.

### What is cesium used for?

Mainly cesium formate drilling fluid for high-pressure oil and gas wells, and atomic clocks, which define the second and underpin GPS and telecoms timing.

### Why is cesium so rare?

It is found in workable quantities only in pollucite, a mineral that occurs in a handful of pegmatite deposits worldwide.

### Is cesium the same as cesium-137?

No. Commercial cesium is the stable isotope cesium-133; cesium-137 is a radioactive isotope produced in nuclear reactors.

### How is the cesium benchmark price calculated?

The Stockatomics benchmark for cesium is a monthly US price in US dollars per kg contained, published every month and current as of October 2026.

## Related commodities

- [Lithium price per kg](https://www.stockatomics.com/commodities/lithium-price-us): $89.62 per kg contained
- [Copper price per kg](https://www.stockatomics.com/commodities/copper-price-us): $13.92 per kg contained
- [Cobalt price per kg](https://www.stockatomics.com/commodities/cobalt-price-us): $56.81 per kg contained
- [Nickel price per kg](https://www.stockatomics.com/commodities/nickel-price-us): $17.24 per kg contained
- [Graphite price per kg](https://www.stockatomics.com/commodities/graphite-price-us): $1.17 per kg graphite
- [Gallium price per kg](https://www.stockatomics.com/commodities/gallium-price-us): $1,530 per kg contained

## Sources

- U.S. trade data: the monthly cesium price.
- U.S. Geological Survey (USGS): the US critical minerals list.
- Company filings: the listed companies and their roles.

Last updated 18 October 2026.