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2. Gold-filled jewelry - Wikipedia

   en.wikipedia.org/wiki/Gold-filled_jewelry

   In the United States, the quality of gold-filled jewelry is defined by the Federal Trade Commission (FTC). 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.

3. Gold - Wikipedia

   en.wikipedia.org/wiki/Gold

   Gold solder is used for joining the components of gold jewelry by high-temperature hard soldering or brazing. If the work is to be of hallmarking quality, the gold solder alloy must match the fineness of the work, and alloy formulas are manufactured to color-match yellow and white gold. Gold solder is usually made in at least three melting ...

4. Fineness - Wikipedia

   en.wikipedia.org/wiki/Fineness

   The fineness of a precious metal object (coin, bar, jewelry, etc.) represents the weight of fine metal therein, in proportion to the total weight which includes alloying base metals and any impurities. Alloy metals are added to increase hardness and durability of coins and jewelry, alter colors, decrease the cost per weight, or avoid the cost ...

5. 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 ...

6. 10,000 metres at the Olympics - Wikipedia

   en.wikipedia.org/wiki/10,000_metres_at_the_Olympics

   The 10,000 metres at the Summer Olympics is the longest track running event held at the multi-sport event. The men's 10,000 m has been present on the Olympic athletics programme since 1912. The women's event was added to the programme over seventy years later, at the 1988 Olympics. It is the most prestigious 10,000 m race at elite level.

7. Gold certificate (United States) - Wikipedia

   en.wikipedia.org/wiki/Gold_certificate_(United...

   Gold certificates were issued by the United States Treasury as a form of representative money from 1865 to 1933. While the United States observed a gold standard, the certificates offered a more convenient way to pay in gold than the use of coins. General public ownership of gold certificates was outlawed in 1933 and since then they have been ...