reply to post by Berenai
Originally posted by earthdude
The gold on those parts is one or two microns thick. From a mountain of these parts you would only get a speck of gold. Throw them away. Yeah, I know you love the color of those connectors, but it is too thin to mess with. You end up wasting money and time, seen it happen. He used an icecream machine to aggitate the solution of connectors and chemicals, all costing way more than he extracted.
Originally posted by Mike.Ockizard
I was at a coin exchange a couple of weeks ago. There was a man who had melted down silver. They wouldnt buy it. They said they could not be sure of the total silver content without re-smelting it. Doesnt sound like a good idea. They would however buy gold/silver coins and jewelry.
Purity of the American Eagle Gold coins
The US mint started making the gold American Eagle coins in 1986. All the sizes (1/10, 1/4, 1/2 and 1 ounce) are 91.67% gold with the rest of the metal in the coin mixture being copper and a trace of silver. This is why a 1/10 oz $5 American Eagle coin will weight
slightly more than a tenth of an ounce. Each $5 Eagle coin contains 1/10 of an ounce of pure gold melted together with the small amount of copper and silver. The copper and silver give the coin a hardness that pure gold does not offer, thereby letting the gold coin better withstand wear.
91.67% gold purity is equal to 22 karat gold
91.67% gold content is a high purity of gold for a coin and is the equivalent of 22kt gold.
In comparison, the old US Gold coins made prior to 1933 were usually 90.0% gold and 10% copper. A few modern day gold coins are made of 99.9% pure gold, such as the Canadian gold Maple Leaf, Austria Philharmonic, and the new US BUFFALO 1 ounce gold coin. Because the modern coins are intended for investors and won't be handled much, the softness of the gold bullion is not much of a concern.
Throughout history most gold coins have been in the 80 to 90% purity range.