3 Inch Polonium Cube (Spark Plug Sample)

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Not many people can say that they own a piece of actual Plutonium from the Trinity bomb experiment. It is definitely a great conversation piece or a good way to keep annoying coworkers from coming to your desk.

The Trinity bomb experiment was the first test of a nuclear weapon developed by the United States. Conducted on July 16, 1945, in the Jornada del Muerto desert near Alamogordo, New Mexico, the bomb was a plutonium implosion-type device with a yield of approximately 20 kilotons of TNT. The test was led by physicist J. Robert Oppenheimer, who oversaw the development of the bomb as part of the Manhattan Project.

The bomb was detonated at 5:29:45 a.m. local time, and the explosion generated a bright flash of light, followed by a massive fireball and mushroom cloud that reached over 41,000 feet in height. The temperature at the center of the Trinity bomb is estimated to have been several million degrees Celsius. The intense heat generated by the blast caused the sand in the surrounding area to fuse together forming a  radioactive green glass called Trinitite. 

The blast also created a crater over 1,200 feet wide and 150 feet deep. The test was a success, and the bomb's explosive power exceeded expectations.

The Trinity test marked the first time a nuclear weapon had been detonated and was a significant moment in the history of nuclear weapon development. The test provided valuable information about the behavior of nuclear weapons and helped pave the way for the development of more advanced nuclear weapons.

The trinitite that was formed contains small amounts of radioactive isotopes, primarily of plutonium and americium. Not all of the plutonium core actually participated in a nuclear chain reaction. The remainder of the plutonium that did not react was vaporized and infused into the trinitite that was formed.   

  • 3x3x3 inches
  • Free Shipping within the US
  • Made In USA

3 inch Vs 2 inch Cube

The 3 inch cubes is exponentially larger than that 2 inch cube. The size is only one inch larger but the volume is 3 times as larger. 

  • Made In USA
  • 3x3x3 inches

Polonium's atomic number is 84 and its symbol is Po. It is a rare and highly radioactive metal with no stable isotopes; its natural occurrence is limited to tiny traces of the fleeting polonium-210 (with a half-life of 138 days) in uranium ores. Due to its intense radioactivity, which results in the radiolysis of chemical bonds and radioactive self-heating, its chemistry has mostly been investigated on the trace scale only.

Discovered by Marie and Pierre Curie and named after their homeland, Poland. It was extracted from the uranium ore and identified solely by its strong radioactivity; it was the first element to be discovered this way. Polonium has few applications, and those are related to its radioactivity: heaters in space probes, antistatic devices, sources of neutrons and alpha particles, and poison.

This display is contained within crystal clear lucite acrylic.

What Sets Us Apart

Unlike many of the knock-offs found online, our element cubes contain the actual elements, which is perhaps the most important feature of the display!

Superior optical clarity, careful placement of the elements in the artwork, and real, pure elements are what set us apart. This is the highest quality and most complete element collection on the market.

We manufacture our periodic tables here in the US using Lucite acrylic which does not yellow over time and is the most optically clear acrylic. This is the perfect gift for the science or chemistry lover in your life. Get yours today!


The trinitite sample is extremely safe and is only slightly radioactive. You would receive several thousand times more radiation from simply flying on an airplane.

Discounts for Defects

We often have periodic tables, heritage museums, and other acrylic displays that have errors (usually a missing or displaced item). We sell these at a discount under the Discounted Items section of the website. Click this link to go to see these kinds of periodic tables. https://engineeredlabs.com/collections/discounted-items

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