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  2. Colored gold - Wikipedia

    en.wikipedia.org/wiki/Colored_gold

    The highest karat version of rose gold, also known as crown gold, is 22 karat. Amongst the alloys made of gold, silver, and copper, the hardest is the 18.1 K pink gold (75.7% gold and 24.3% copper). An alloy with only gold and silver is the hardest at 15.5 K (64.5% gold and 35.5% silver).

  3. Fineness - Wikipedia

    en.wikipedia.org/wiki/Fineness

    24-carat gold is pure (while 100% purity is very difficult to attain, 24-carat as a designation is permitted in commerce for a minimum of 99.95% purity), 18-carat gold is 18 parts gold, 6 parts another metal (forming an alloy with 75% gold), 12-carat gold is 12 parts gold (12 parts another metal), and so forth. [20]

  4. Gold (color) - Wikipedia

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

    This is an accepted version of this page This is the latest accepted revision, reviewed on 8 January 2025. Color "Gold tone" redirects here. For the type of photographic print, see Gold tone (print). For treatments that change the natural color of gold, see Colored gold. For the element, see Gold. This article needs additional citations for verification. Please help improve this article by ...

  5. Karatmeter - Wikipedia

    en.wikipedia.org/wiki/Karatmeter

    Using this technique, the precise percentage or karat (of karat) in a solid piece of jewelry can be determined in 30 seconds. It also accurately (up to 10-12 microns) determines the element composition of all types of gold, white gold , platinum , silver , palladium , rhodium and related alloys .

  6. List of RAL colours - Wikipedia

    en.wikipedia.org/wiki/List_of_RAL_colours

    Österreichische Post, Deutsche Bundespost 1972–1980, gold in the flag of Germany: RAL 1023: Traffic yellow: U4 line of the Berlin U-Bahn, Germany ; S6 line of the Milan S Lines [3] RAL 1024: Ochre yellow: RAL 1026: Luminous yellow: RAL 1027: Curry: RAL 1028: Melon yellow: Lufthansa: RAL 1032: Broom yellow: Deutsche Bundespost since 1980 ...

  7. American Gold Eagle - Wikipedia

    en.wikipedia.org/wiki/American_Gold_Eagle

    The 22 kt gold alloy is an English standard traditionally referred to as "crown gold". Crown gold alloys had not been used in U.S. coins since 1834, with the gold content having dropped since 1837 to a standard of 0.900 fine for U.S. gold coins. For American Gold Eagles the gold fraction was increased again to .9167 or (22 karat).

  8. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!

  9. Black Hills gold jewelry - Wikipedia

    en.wikipedia.org/wiki/Black_Hills_gold_jewelry

    The different colors of gold used for leaves and other details are made when the pure 24 Karat yellow gold is alloyed with copper to achieve the traditional 14 karat pink (or red) gold, and the gold is combined with silver to create the 14 karat green gold. The resulting gold bars are then readied for rolling.