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  2. 18 Most Expensive Gemstones in the World - AOL

    www.aol.com/18-most-expensive-gemstones-world...

    16. Gold. Cost: $62.26 per gram. ... Cost: $27 million per gram. Californium is a rare element that is man-made and not found in nature. As the name suggests, the element was first created in the ...

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

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

    Cost: $57.22 per gram. Gold has been valuable since time immemorial because it is beautiful and has always been seen as a store of wealth. ... $27 million per gram. Californium is a rare element ...

  4. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium. It is followed by caesium, iridium and palladium by mass and iridium, gold and platinum by volume. Carbon in the form of diamond can be more expensive than rhodium. Per-kilogram prices of some synthetic radioisotopes range to trillions of dollars.

  5. Californium - Wikipedia

    en.wikipedia.org/wiki/Californium

    Gold: Mercury (element) Thallium: Lead: ... Californium is a synthetic chemical element; ... the two sites produce 0.25 grams and 0.025 grams of 252 Cf per year, ...

  6. Einsteinium - Wikipedia

    en.wikipedia.org/wiki/Einsteinium

    Its density of 8.84 g/cm 3 is lower than that of californium (15.1 g/cm 3) and is nearly the same as that of holmium (8.79 g/cm 3), despite einsteinium being much heavier per atom than holmium. Einsteinium's melting point (860 °C) is also relatively low – below californium (900 °C), fermium (1527 °C) and holmium (1461 °C).

  7. How Much Is a Gold Bar Worth?

    www.aol.com/much-gold-bar-worth-210716359.html

    As of Oct. 26, 2023, the price of 1 gram of gold is $64.16, whereas a gold bar that weighs a kilogram would fetch $64,160.67. How much is a 1-pound gold bar worth?