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  2. Colored gold - Wikipedia

    en.wikipedia.org/wiki/Colored_gold

    White gold is an alloy of gold and at least one white metal (usually nickel, silver, platinum or palladium). [4] Like yellow gold, the purity of white gold is given in karats. White gold's properties vary depending on the metals used and their proportions. A common white gold formulation consists of 90% wt. gold and 10% wt. nickel. [3] Copper ...

  3. Electrum - Wikipedia

    en.wikipedia.org/wiki/Electrum

    Electrum was often referred to as "white gold" in ancient times but could be more accurately described as pale gold because it is usually pale yellow or yellowish-white in color. The modern use of the term white gold usually concerns gold alloyed with any one or a combination of nickel, silver, platinum and palladium to produce a silver-colored ...

  4. White metal - Wikipedia

    en.wikipedia.org/wiki/White_metal

    The term is also used in the antiques trade for an item suspected of being silver, but not hallmarked. A white metal alloy may include antimony, tin, lead, cadmium, bismuth, and zinc (some of which are quite toxic). Not all of these metals are found in all white metal alloys. Metals are mixed to achieve a desired goal or need.

  5. Gold vs. silver investing: Which is better when interest ...

    www.aol.com/gold-vs-silver-investing-better...

    Gold and silver are both precious metal assets worth investing in, but one could be a better bet right now. / Credit: Getty Images/iStockphoto Until recently, inflation had been high in the U.S.

  6. Gold vs. silver: Which is better for your portfolio?

    www.aol.com/gold-vs-silver-better-portfolio...

    When prices across the economy start climbing, gold and silver often become go-to alternative assets for investors. Gold, in particular, has been an effective inflation hedge. To illustrate this ...

  7. Silver - Wikipedia

    en.wikipedia.org/wiki/Silver

    Since silver is more reactive than gold, supplies of native silver were much more limited than those of gold. [63] For example, silver was more expensive than gold in Egypt until around the fifteenth century BC: [65] the Egyptians are thought to have separated gold from silver by heating the metals with salt, and then reducing the silver ...

  8. Noble metal - Wikipedia

    en.wikipedia.org/wiki/Noble_metal

    In more specialized fields of study and applications the number of elements counted as noble metals can be smaller or larger. It is sometimes used for the three metals copper, silver, and gold which have filled d-bands, while it is often used mainly for silver and gold when discussing surface-enhanced Raman spectroscopy involving metal ...

  9. Fineness - Wikipedia

    en.wikipedia.org/wiki/Fineness

    For example, knowing that standard 18-karat yellow gold consists of 75% gold, 12.5% silver and the remaining 12.5% of copper (all by mass), the volume of pure gold in this alloy will be 60% since gold is much denser than the other metals used: 19.32 g/cm 3 for gold, 10.49 g/cm 3 for silver and 8.96 g/cm 3 for copper.