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2. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   For example, knowing that standard 18-carat 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.

3. Gold-filled jewelry - Wikipedia

   en.wikipedia.org/wiki/Gold-filled_jewelry

   If the gold layer is 10kt fineness, the minimum weight of the plated layer on an item stamped gold-filled marks according to the Federal Trade Commission (FTC) must equal at least 1 ⁄ 20th of the total weight of the item. If the gold layer is 12 kt or higher, the minimum layer of karat gold in an item stamped gold-filled marks must equal at ...

4. Jewellery chain - Wikipedia

   en.wikipedia.org/wiki/Jewellery_chain

   Gold chain with garnets, rock crystals and enamel from the 16th century, Sweden. Jewellery chains, jewelry chains or body chains are metal chains [1] [2] that are used in jewellery to encircle parts of the body, [3] namely the neck, wrists and ankles, [4] and they also serve as points to hang decorative charms and pendants. [5] [6] [7]

5. Saint-Gaudens double eagle - Wikipedia

   en.wikipedia.org/wiki/Saint-Gaudens_double_eagle

   In 1907, the Mint had experimented by striking about two dozen pieces of the same weight as the double eagle, bearing Saint-Gaudens's design, but which had a smaller, thicker planchet. These "checker" pieces were destroyed (except two placed in the Mint's coin collection) when it was discovered that the consent of Congress was needed to change ...

6. Template:Infobox person/weight - Wikipedia

   en.wikipedia.org/wiki/Template:Infobox_person/weight

   This template is used on approximately 69,000 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage . Consider discussing changes on the talk page before implementing them.

7. File:Gold Spot Price per Gram from Jan 1971 to Jan 2012.svg

   en.wikipedia.org/wiki/File:Gold_Spot_Price_per...

   English: This chart shows the nominal price of gold along with the price in 1971 and 2011 dollars (adjusted based on the consumer price index). The historical gold price was obtained from www.igolder.com; CPI was obtained from www.rateinflation.com.