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  2. Lutetium aluminium garnet - Wikipedia

    en.wikipedia.org/wiki/Lutetium_aluminium_garnet

    Samples of Ce:LuAG, each faceted as a gemstone for use in jewelry. While LuAG is not grown specifically for the gem trade, industrial scrap is sometimes repurposed into gemstones. Lutetium aluminum garnet (commonly abbreviated LuAG , molecular formula Lu 3 Al 5 O 12 ) is an inorganic compound with a unique crystal structure primarily known for ...

  3. Yttrium aluminium garnet - Wikipedia

    en.wikipedia.org/wiki/Yttrium_aluminium_garnet

    Yttrium aluminium garnet (YAG, Y 3 Al 5 O 12) is a synthetic crystalline material of the garnet group. It is a cubic yttrium aluminium oxide phase, with other examples being YAlO 3 (YAP [ 2 ] ) in a hexagonal or an orthorhombic, perovskite -like form, and the monoclinic Y 4 Al 2 O 9 (YAM [ 3 ] ).

  4. YIG sphere - Wikipedia

    en.wikipedia.org/wiki/YIG_sphere

    The YIG spheres themselves are on the order of 0.5 mm in diameter and are manufactured from slightly larger cubes of diced material by tumbling, as is done in the manufacture of jewelry. The garnet is mounted on a ceramic rod, and a pair of small loops around the sphere couple fields into and out of the sphere; the loops are half-turns ...

  5. Signet Jewelers - Wikipedia

    en.wikipedia.org/wiki/Signet_Jewelers

    Signet Jewelers Ltd. (Ratner Group 1949–1993 then Signet Group plc to September 2008) is, as of 2015, the world's largest retailer of diamond jewellery. [1] The company is domiciled in Bermuda and headquartered in Akron, Ohio, and is listed on the New York Stock Exchange.

  6. How to Sell Gold Jewelry When Prices Hit Historic High

    www.aol.com/sell-gold-jewelry-price-nears...

    Aim to get 90 to 95% of the spot price when selling gold bars or coins, and 70 to 80% of melt value for jewelry and other items. A karat is a unit of measure for the fineness of gold. For example ...

  7. Precious metal - Wikipedia

    en.wikipedia.org/wiki/Precious_metal

    In jewelry, they are a cornerstone for crafting wedding bands, engagement rings, and ceremonial adornments, often symbolizing love, commitment, and social status. [ 11 ] [ 12 ] [ 13 ] Beyond jewelry, these metals are employed in fine art, including sculptures , decorative artifacts, and religious icons , showcasing their versatility and ...

  8. Tsavorite - Wikipedia

    en.wikipedia.org/wiki/Tsavorite

    Tsavorite or tsavolite is a variety of the garnet group species grossular, a calcium-aluminium garnet with the formula Ca 3 Al 2 Si 3 O 12. [2] Trace amounts of vanadium or chromium provide the green color.

  9. List of jewellery types - Wikipedia

    en.wikipedia.org/wiki/List_of_jewellery_types

    This page was last edited on 6 February 2025, at 11:20 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

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