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In the last few years, several companies have sprouted up, eager to feed off the gold frenzy. But, before you ship your baubles off in the mail or trade them in at a gold party, it's worth while ...
The price you should get for selling gold varies based on the amount of gold you are selling, the quality of the gold and the buyer. In general, you should expect to receive between 50% and 90% of ...
Gold has high thermal and electrical conductivity properties, along with a high resistance to corrosion and bacterial colonization. Jewelry and industrial demand have fluctuated over the past few years due to the steady expansion in emerging markets of middle classes aspiring to Western lifestyles, offset by the financial crisis of 2007–2010 ...
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 least 1 ⁄ 20th the total weight of the item. The most common stamps found on gold-filled jewelry are 1 ⁄ 20th 12kt GF and 1 ⁄ 20th 14kt GF.
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.
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