M & M Gold Exchange notes that jewelers and others have long used the same tests, including applying nitric acid and attempting to attach a magnet to a metal piece, to verify an item is made of real gold. In the United States, anything less than 10 karats is not considered real gold.Continue Reading
According to M & M Gold Exchange, the simplest way to test a piece of metal to see if it is gold is to attempt to attach a magnet to it. Gold is not magnetic. However, many of the metals used in fake gold jewelry and other objects are magnetic. Bear in mind that clasps and other parts of certain gold jewelry are often made of magnetic metal. Apply the magnet to the main portion of the piece to avoid making a mistake.
Hosts of the PBS television show "Antiques Roadshow" and their various experts frequently help guests determine whether family heirlooms and estate sale finds are real gold. They recommend applying nitric acid to residue from the object to check its authenticity. Do this by rubbing the object onto a piece of slate. Next, apply a small amount of nitric acid to the residual on the slate. If the acid completely dissolves the residual, the object is not likely gold. If any residual remains, it most likely is gold.Learn more about Precious Metals & Gems
To date gold, it is necessary to check the hallmark on the piece of jewelry or gold item. The date is shown by a letter in the hallmark, so some research is needed in order to link the letter to a date. A cleaning cloth and a magnifying glass are needed to undertake the dating process.Full Answer >
You can differentiate real gold from fake gold by completing a density test, magnetic test, nitric acid test or by checking for a hallmark. A sure way to tell if gold is real or not is to take it to a professional appraiser.Full Answer >
Determine if gold is real by looking for a hallmark purity stamp, checking for magnetic attraction or performing a nitric acid test. Real gold is not attracted to a magnet and does not react when tested with nitric acid. Additionally, real gold is heavy and will sink when dropped into a jug of water, so if a piece of jewelry floats, it's unlikely that it's made of real gold.Full Answer >
Gold overlay is a thick coating of gold that jewelers lay over metal jewelry. The process has been around for thousands of years, and jewelry that undergoes this process is more valuable than other types of jewelry that has gold added to it in a different way. In gold-plated jewelry, the gold is plated on top of the metal and doesn't last as long as gold overlay.Full Answer >