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  2. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    A–B Actinolite Nephrite (var.) Adamite Aegirine Afghanite Agrellite Algodonite Alunite Amblygonite Analcime Anatase Andalusite Chiastolite Andesine Anglesite Anhydrite Annabergite Anorthite Antigorite Bowenite Apatite Apophyllite Aragonite Arfvedsonite Asbestos Astrophyllite Atacamite Augelite Austinite Axinite group: Ferroaxinite Magnesioaxinite Manganaxinite Tinzenite Azurmalachite Azurite ...

  3. Ruby - Wikipedia

    en.wikipedia.org/wiki/Ruby

    Ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, alongside amethyst, sapphire, emerald, and diamond. [3] The word ruby comes from ruber, Latin for red ...

  4. Bezel (jewellery) - Wikipedia

    en.wikipedia.org/wiki/Bezel_(jewellery)

    Bezel (jewellery) A bezel is a wider and usually thicker section of the hoop of a ring, which may contain a gem or a flat surface (usually with an engraved design, as in a signet ring). [1] Rings are normally worn to display bezels on the upper or outer side of the finger. In gem-cutting the term bezel is used for those sloping facets (also ...

  5. Amethyst - Wikipedia

    en.wikipedia.org/wiki/Amethyst

    Amethyst is a purple variety of quartz (SiO. 2) and owes its violet color to irradiation, impurities of iron (Fe3+. ) and in some cases other transition metals, and the presence of other trace elements, which result in complex crystal lattice substitutions. [2][3][4] The irradiation causes the iron Fe3+.

  6. Ametrine - Wikipedia

    en.wikipedia.org/wiki/Ametrine

    Ametrine, also known as trystine or by its trade name as bolivianite, is a naturally occurring variety of quartz. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Almost all commercially available ametrine is mined in Bolivia. The colour of the zones visible within ametrine are due to differing oxidation states ...

  7. Ring (jewellery) - Wikipedia

    en.wikipedia.org/wiki/Ring_(jewellery)

    Ring (jewellery) A ring is a round band, usually made of metal, worn as ornamental jewelry. The term "ring" by itself denotes jewellery worn on the finger; when worn as an ornament elsewhere, the body part is specified within the term, e.g., earrings, neck rings, arm rings, and toe rings. Rings fit snugly around or in the part of the body they ...

  8. Rings of Power - Wikipedia

    en.wikipedia.org/wiki/Rings_of_Power

    Rings of Power. The Rings of Power are magical artefacts in J. R. R. Tolkien 's legendarium, most prominently in his high fantasy novel The Lord of the Rings. The One Ring first appeared as a plot device, a magic ring in Tolkien's children's fantasy novel, The Hobbit; Tolkien later gave it a backstory and much greater power.

  9. Jewellery - Wikipedia

    en.wikipedia.org/wiki/Jewellery

    Jewellery (or jewelry in American English) consists of decorative items worn for personal adornment such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks.