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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Price of synthetic industrial diamond for grinding and polishing can range from 1200 to 13 300 USD/kg, while cost per weight of large synthetic diamonds for industrial applications can be on the order of million dollars per kilogram. [21] 7: N: Nitrogen: 0.0012506: 19 (5.263 × 10 17 kg) 0.140: 0.000 175: 2001: Hypertextbook [24] As liquid ...

  3. 18 Most Expensive Gemstones in the World - AOL

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

    18. Platinum. Cost: $33.02 per gram Platinum is a beautiful precious metal that is in a similar category as gold and silver. All three of these metals are frequently traded in the global markets ...

  4. Fire of Australia opal - Wikipedia

    en.wikipedia.org/wiki/Fire_of_Australia_Opal

    The Fire of Australia opal is a 998 gram uncut opal mined by Walter Bartram in 1946 at the Eight Mile field in Coober Pedy, South Australia. [1] [2] The opal is just under 5,000 carats; roughly equivalent in size to two cricket balls. [1] Although rough-cut, it is polished on two sides. [3]

  5. Opal - Wikipedia

    en.wikipedia.org/wiki/Opal

    Wood opal, also known as xylopal, [51] [52] is a form of opal, [53] as well as a type of petrified wood which has developed an opalescent sheen or, more rarely, where the wood has been completely replaced by opal.

  6. World's most expensive opal literally glows in the dark - AOL

    www.aol.com/news/2015-08-13-world-s-most...

    It's valued at over $1 million and was purchased by the South Australian Museum in Adelaide which will be presenting it as part of their "Opals" exhibit to celebrate 100 years of gemstone mining ...

  7. How Much Is a Meteorite Worth? - AOL

    www.aol.com/finance/much-meteorite-worth...

    How much are meteorites really worth? ... approximately $15,000 per pound. Meteorites from the Moon are even more valuable. ... A 406-gram lunar meteorite sold for $189,000. That works out to more ...

  8. Flame Queen Opal - Wikipedia

    en.wikipedia.org/wiki/Flame_Queen_Opal

    The Flame Queen Opal is perhaps the best-known example of "eye-of-opal", an eye-like effect created when opal in-fills a cavity. [ 1 ] The Flame Queen's flat central raised dome flashes red or gold depending on the angle of view, and is surrounded by a band of deep blue-green, giving the stone an appearance somewhat like that of a fried egg.

  9. Galaxy Opal - Wikipedia

    en.wikipedia.org/wiki/Galaxy_Opal

    The Galaxy Opal is the world's largest polished opal, certified by the Guinness Book of World Records in 1992. [1] It was found at the Boi Morto Mine in Brazil in 1976. [ 2 ] The finished opal weighs approximately 3,749 carats , or 0.75 kg.

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