Dn this video we do the following: Teach a quick lesson on how to find sites to metal detect, clean out a well for future digs, and find some kick butt treasure! Metal detecting this old 1800′s homesite pays off.
Kn this video Scrap Iron, Tyler, and Randy go out and knock some doors to gain access to some old homes located in an old downtown area. What is their payoff? Silver and Rings!
Quite often we get the same questions repetitively. In those instances I like to go ahead and post them here on our blog as a resource for others who may be asking the same question. This week, once again I had someone ask how to use acid to test for gold. We sell a gold testing kit that comes with 3 vials of varying strengths of acid solutions and an acid testing stone. The kit comes with 10K, 14K, and 18K testing acid. Individual vials are available too. Another useful tool is a set of gold testing needles. Here is how you use the kit:
Use extreme care in handling gold and silver testing solutions, for they are, corrosive acids. In case of skin contact, flush with large amounts of water. Then treat affected area with sodium bicarbonate or baking soda. If swallowed, contact a physician or hospital at once. In case of spills. treat with water and then sodium bicarbonate or baking soda.
TESTING FOR GOLD
Scratch the piece to be tested over the surface of the black stone provided, press well so as to leave a visible deposit, preferably a line of one to one-half inches long. For the most accurate testing it is recommended that the user becomes familiar with comparative testing using standard gold testing needles. For highest sensitivity place a scratch line with a gold test needle next to the scratch line of the metal you are testing. Compare the speed at which the scratches dissolve. If the test scratch dissolves more quickly than the needle scratch, it is a lower karat than the needle.
Transfer a drop of the 10K solution to the scratch made. If the solution dissolves the scratch on the stone. it means the object is less than 10K gold or not gold at all. If the, solution leaves the scratch intact, it means the object being tested is 10K or greater than 10K.
The scratching and testing is repeated with the 14K solution. If the Solution dissolves the scratch on the stone, it means the object is less than 14K gold (if the scratch dissolves slowly and leaves rusty color particles, it is probably 12k gold). If the solution leaves the scratch intact, it means the object being tested is 14K or greater than 14K. (CAUTION: Many objects are marked 14K, but were fabricated prior to 1982 when it was legal to mark items 14K, but in reality the gold was 13.5K. When testing 13.5K gold, the 14K solution will not dissolve the scratch, but it will make it lose its brightness and it will turn it into a yellow-rusty color).
The scratching and testing is repeated with the 18K solution and the 22K solution (if available) until the karat of the object is determined. Remember that when the solution being used dissolves the scratch slowly and leaves rusty color particles it is probably two karats lower than the solution being used.
On items of heavy weight and volume such as chains, coins, etc, where plating could hide the true metal, it is recommended that a deep notch in the test piece be made and the testing be made with the metal inside the piece