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  2. Platinum (color) - Wikipedia

    en.wikipedia.org/wiki/Platinum_(color)

    CIELCh uv ( L, C, h) (91, 2, 68°) Source. [1] /Maerz and Paul [1] ISCC–NBS descriptor. Grayish white. B: Normalized to [0–255] (byte) Platinum is a color that is the metallic tint of pale grayish-white resembling the metal platinum . The first recorded use of platinum as a color name in English was in 1918.

  3. Platinum - Wikipedia

    en.wikipedia.org/wiki/Platinum

    Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "silver". Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements.

  4. Colored gold - Wikipedia

    en.wikipedia.org/wiki/Colored_gold

    Colored gold is the name given to any gold that has been treated using techniques to change its natural color. Pure gold is slightly reddish yellow in color, [1] but colored gold can come in a variety of different colors by alloying it with different elements. Colored golds can be classified in three groups: [2] Alloys with silver and copper in ...

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

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

    If your piece is platinum, you should see 950, 900, Platinum or Plat. For silver, you’ll find 925, 800, silver or sterling. Here are a few key takeaways to help you interpret some jewelry stamps:

  6. Precious metal - Wikipedia

    en.wikipedia.org/wiki/Precious_metal

    Precious metal. A selection of precious metal elements; gold, silver, platinum, palladium, copper, ruthenium, rhodium, rhenium, osmium, iridium and mercury. They are labeled and arranged by their location on the periodic table. Precious metals are rare, naturally occurring metallic chemical elements of high economic value.

  7. Platinum group - Wikipedia

    en.wikipedia.org/wiki/Platinum_group

    The platinum-group metals ( PGMs ), also known as the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements ( PGEs ), are six noble, precious metallic elements clustered together in the periodic table. These elements are all transition metals in the d-block (groups 8, 9, and 10, periods ...

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