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  2. Your Ring Could Be Worth Thousands: How To Spot Valuable ...

    www.aol.com/ring-could-worth-thousands-spot...

    If you don't know if your ring is worth money, it's always a good idea to further investigate. ... Here are a few key takeaways to help you interpret some jewelry stamps: Sterling silver with a ...

  3. Silver hallmarks - Wikipedia

    en.wikipedia.org/wiki/Silver_hallmarks

    "The words "silver" and "sterling silver" describe a product that contains 92.5% pure silver. Silver products sometimes may be marked 925, which means that 925 parts per thousand are pure silver. Some jewellery described as "silver plate" has a layer of silver applied to a base metal. "Coin silver" is used for compounds that contain 90% pure ...

  4. Gemstone irradiation - Wikipedia

    en.wikipedia.org/wiki/Gemstone_irradiation

    Gemstone irradiation is a process in which a gemstone is exposed to artificial radiation in order to enhance its optical properties.High levels of ionizing radiation can change the atomic structure of the gemstone's crystal lattice, which in turn alters the optical properties within it. [1]

  5. Amethyst - Wikipedia

    en.wikipedia.org/wiki/Amethyst

    Amethyst is a violet variety of quartz.The name comes from the Koine Greek αμέθυστος amethystos from α - a-, "not" and μεθύσκω (Ancient Greek) methysko / μεθώ metho (Modern Greek), "intoxicate", a reference to the belief that the stone protected its owner from drunkenness. [1]

  6. 'Antiques Roadshow': diamond and ruby jewelry worth a fortune

    www.aol.com/news/2014-08-12-antiques-roadshow...

    Add that, plus the cost of the pendants, which were worth about $12,000 ... and you've got a whopping total of $257,000. You think that's a lot of money. Well, today, that 3-piece set is valued ...

  7. 'Antiques Roadshow': 'Good luck' turtle jewelry worth a small ...

    www.aol.com/news/2014-12-30-antiques-roadshow...

    These are worth more than emeralds." In fact, one fine jewelry collector says the "Demantoid is among the most expensive of all garnets" with some of the better pieces worth as much as $10,000 per ...

  8. Prasiolite - Wikipedia

    en.wikipedia.org/wiki/Prasiolite

    Prasiolite (also known as green quartz, green amethyst or vermarine) is a green variety of quartz. Since 1950, almost all natural prasiolite has come from a small Brazilian mine, [ citation needed ] but it has also been mined in the Lower Silesia region of Poland .

  9. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Heat can either improve or spoil gemstone color or clarity. The heating process has been well known to gem miners and cutters for centuries, and in many stone types heating is a common practice. Most citrine is made by heating amethyst, and partial heating with a strong gradient results in "ametrine" – a stone partly amethyst and partly citrine.