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  2. 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]

  3. Jewellery - Wikipedia

    en.wikipedia.org/wiki/Jewellery

    By 1500 BC, the peoples of the Indus Valley were creating gold earrings and necklaces, bead necklaces, and metallic bangles. [citation needed] Before 2100 BC, prior to the period when metals were widely used, the largest jewellery trade in the Indus Valley region was the bead trade. Beads in the Indus Valley were made using simple techniques.

  4. Jewels of Diana, Princess of Wales - Wikipedia

    en.wikipedia.org/wiki/Jewels_of_Diana,_Princess...

    She wore a pair of pearl studs and a pearl necklace. [12] The pearl studs were worn by Diana as early as 1975 [13] and were last seen on the Princess in 1990 while opening a police station at 462 Fore Street, Edmonton, London. [6] On her 18th birthday, Diana was given a triple-strand pearl choker by the Spencer family. [14]

  5. Roman jewelry - Wikipedia

    en.wikipedia.org/wiki/Roman_jewelry

    Examples of jewelry worn by the higher social classes include solid gold necklaces, earrings, bracelets, rings, and bulla with many variations within these classes of jewelry. Some bracelets were used without clasps (solid gold snake bracelets), while others used gold pins or small gold screws to fasten the bracelet to the wrist.

  6. Earring - Wikipedia

    en.wikipedia.org/wiki/Earring

    Stick-on earrings – Stick-on earrings are adhesive-backed items which stick to the skin of the earlobe and simulate the look of a (pierced) stud earring. They are considered a novelty item. Spring hoop earrings – Spring hoops are almost indistinguishable from standard hoop earrings and stay in place by means of spring force.

  7. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Spanish emerald and gold pendant at Victoria and Albert Museum Enamelled gold, amethyst, and pearl pendant, about 1880, Pasquale Novissimo (1844–1914), V&A Museum number M.36-1928. Gemstones have no universally accepted grading system. Diamonds are graded using a system developed by the Gemological Institute of America (GIA) in the early ...

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