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  2. Tourmaline - Wikipedia

    en.wikipedia.org/wiki/Tourmaline

    Gem and specimen tourmaline is mined chiefly in Brazil and many parts of Africa, including Tanzania, Nigeria, Kenya, Madagascar, Mozambique, Malawi, and Namibia. It is also mined in Asia , notably in Pakistan , Afghanistan , and Indonesia as well as in Sri Lanka and India , [ 25 ] where some placer material suitable for gem use is found.

  3. Elbaite - Wikipedia

    en.wikipedia.org/wiki/Elbaite

    Elbaite, a sodium, lithium, aluminium boro-silicate, with the chemical composition Na(Li 1.5 Al 1.5)Al 6 Si 6 O 18 (BO 3) 3 (OH) 4, [4] is a mineral species belonging to the six-member ring cyclosilicate tourmaline group. Elbaite forms three series, with dravite, with fluor-liddicoatite, and with schorl.

  4. Rubellite - Wikipedia

    en.wikipedia.org/wiki/Rubellite

    Rubellite is the red or pink variety of tourmaline and is a member of elbaite. Rubellite is also the rarest gem in its family. [2] It is occasionally mistaken for ruby. [3] These gems typically contain inclusions. [4] Notable countries where rubellite can be mined include Afghanistan, Brazil, Madagascar, Myanmar, Nigeria, Russia, and the United ...

  5. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    A gemstone (also called a fine gem, jewel, precious stone, ... Even though it is a tourmaline, Paraiba Tourmaline is one of the most expensive gemstones. [31]

  6. 11 Engagement Ring Trends for 2024 That Will Make You Say ‘I Do’

    www.aol.com/11-engagement-ring-trends-2024...

    “There’s also been a growing demand for alternative or raw diamond cuts and colored precious gemstones like emeralds and sapphires.” ... com%2FToi-et-Moi-Morganite-and-Pink-Tourmaline ...

  7. Jade - Wikipedia

    en.wikipedia.org/wiki/Jade

    Main jade producing countries. Jade is an umbrella term for two different types of decorative rocks used for jewelry or ornaments.Jade is often referred to by either of two different silicate mineral names: nephrite (a silicate of calcium and magnesium in the amphibole group of minerals), or jadeite (a silicate of sodium and aluminum in the pyroxene group of minerals). [1]

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