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  2. 18 Most Expensive Gemstones in the World - AOL

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    A pure, 1-carat diamond can easily fetch a price in the six digits per gram. Prices can vary dramatically based on color, cut and other factors. ... Californium 252. Cost: $27 million per gram.

  3. From Seagull Poop to Plutonium: The Most Valuable ... - AOL

    www.aol.com/gold-caviar-most-valuable-substances...

    A pure, 1-carat diamond can easily fetch a price in the six digits per gram. Prices can vary dramatically based on color, cut and other factors. ... Californium 252. Cost: $27 million per gram.

  4. Californium - Wikipedia

    en.wikipedia.org/wiki/Californium

    As of 2003, the two sites produce 0.25 grams and 0.025 grams of 252 Cf per year, respectively. [57] Three californium isotopes with significant half-lives are produced, requiring a total of 15 neutron captures by uranium-238 without nuclear fission or alpha decay occurring during the process.

  5. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    In the form of boric acid, price per boron contained. Min. 99% pure. 6: C: Carbon: 2.267: 200 (5.54 × 10 18 kg) 0.122: 0.28: 2018: EIA Coal [19] In the form of anthracite, price per carbon contained, assuming 90% carbon content. There is a wide variation of price of carbon depending on its form.

  6. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    californium-252: 2.645 83.5 iron-55: 2.756 87.0 plutonium-236: 2.858 90.2 polonium-208: 2.898 91.5 rhodium-101: 3.3 100 cobalt-60: 5.2714 166.35 radium-228: 5.75 181 barium-133: 10.74 339 krypton-85: 10.756 339.4 hydrogen-3 (also known as tritium) 12.32 389 californium-250: 13.08 413 plutonium-241: 14.290 451.0 niobium-93m: 16.13 509 promethium ...

  7. From Seagull Poop to Plutonium: The Most Valuable ... - AOL

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    A single gram of some substances can cost a mind-boggling sum. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...

  8. Isotopes of californium - Wikipedia

    en.wikipedia.org/wiki/Isotopes_of_californium

    Californium-252 production diagram Californium-252 (Cf-252, 252 Cf) undergoes spontaneous fission with a branching ratio of 3.09% and is used in small neutron sources . Fission neutrons have an energy range of 0 to 13 MeV with a mean value of 2.3 MeV and a most probable value of 1 MeV.

  9. Transuranium element - Wikipedia

    en.wikipedia.org/wiki/Transuranium_element

    Transuranic elements are difficult and expensive to produce, and their prices increase rapidly with atomic number. As of 2008, the cost of weapons-grade plutonium was around $4,000/gram, [2] and californium exceeded $60,000,000/gram. [3] Einsteinium is the heaviest element that has been produced in macroscopic quantities. [4]