Uranium Element Cube (2inch Autunite)

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  • 50% Uranium sample (by mass)
  • 2x2x2 inches
  • Free Shipping within the US
  • Made In USA


Why Buy Uranium 

Not many people can say that they own a piece of actual uranium. This sample of Uranium is a beautiful green crystal called Autunite. It is definitely a great conversation piece or a good way to keep annoying coworkers from coming to your desk. (*Requires a UV light to illuminate/fluoresce)



Technical Info 

It is 50% uranium by mass and is a naturally forming crystal of Uranium. Natural uranium contains about 0.7% uranium-235 which is the fissionable isotope used in nuclear reactors. This sample has about 2.5 grams of autunite which translates to about 8.75mg of the same isotope that nuclear bombs are made out of! The remaining 99.3% is U-238, also known as depleted uranium. 

Uranium is a chemical element with the symbol U and atomic number 92. In its pure form, it is a silvery-grey metal but this sample is obviously not the metal form.  Uranium is part of the actinide series of the periodic table.

Most people think of modern technology when they hear the word uranium since it is the key element in nuclear energy and nuclear weapons.  However, Uranium was actually used as far back as the middle ages as a color additive to glass. 



It is not regulated by law because it is a natural crystal specimen.  It is license-exempt and considered a Radioactive Ore Sample or Naturally Occurring Radioactive Materials (NORM). That being said, Autunite is becoming increasingly hard to find and collect. 

    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 cube is slightly radioactive but the acrylic shields most of the Alpha and Beta particles. Background radiation we are exposed to this every day is about 30CPM. These samples measure anywhere from 60 to 120 CPM. So about 2 to 4 times the background radiation. In comparison, you would receive more radiation flying on an airplane. X-rays at the doctors would be thousands of times this dose.  Also, a side note the FDA allows for a person to consume about 20mg of uranium in their drinking water every year.  The bottom line is that this cube is very safe unless you were somehow able to break it open and make pistachio pudding with it. 

    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

    Customer Reviews

    Based on 107 reviews
    andrew smith
    Outstanding Specimen!

    How many people can say they own uranium!? It glows quite brilliantly under a UV/blacklight!

    Martin Pedersen
    Nice. But to expensive

    Got it pretty fast. But ended up costing me the double to get. Shipment. And danish system wanted more money

    Alexandra Bellov

    A great birthday gift for my partner

    Moises Hidalgo Boj

    Muy guay! Perfecto 🤩

    Jason Cawthorn I

    Great quality item. Good communication and responsiveness. Highly recommended!