Plutonium Element Cube (Trinitite Sample)

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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 plutonium and americium. Not all of the plutonium core actually participated in the nuclear chain reaction. The remainder of the plutonium that did not react was vaporized and infused into the trinitite that was formed.

  • Made In USA
  • 2x2x2 inches



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 element cubes 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.

Customer Reviews

Based on 15 reviews
Kamijo Nobutake

It's a strange color and it really piques my interest.

Dr.Murvai Béla

A very decorative product, it looks genuinely nice next to the "Uranium Element Cube" in my son's room in the display cabinet. Of course, I was forced to put a "Radioactive Material!" pictogram on the door of his room at his request.
Engineered Labs is perfect, as always! Thank you very much!

Khang Vo
Very cool

Very cool and beautiful, I like it very much but one thing is that the stickers and letters printed inside are quite skewed and not straight like in the other picture, otherwise it's super ok 😍😍

Super Cool !

A little piece of history, especially if you're a fan of Oppenheimer, and it makes for a great desk decoration!

J. Robert Oppenheimer

thank you so much this helped a lot in making the bomb