Want to try your luck finding gold in an unclaimed land? All you need is a metal detector. Metal detectors work on the principle of electromagnetism. Every metal (in solid state) has its own electric and magnetic field. Metal detectors have 2 circuits; one circuit, which is connected to a small battery which powers it up. This circuit is called as transmitter circuit. It sends electricity down the shaft to the coil at the bottom. The coil gets magnetized (changes its magnetic field) when this magnetized coil is swept on the ground and if there is a metal object near its sweep area, the magnetic field of the coil charges the metal object. The magnetic field of the metal detector changes the magnetic and hence the electric field of the metal object. This change in electromagnetism of the metal object is picked up by the receiver circuit of the metal detector. Due to the change in the magnetism of the coil of the metal detector, the electricity flows up the shaft of the detector to the receiver circuit. This change in the electromagnetism registered on receiver circuit confirms a metal detected by the coil. Gold is not something that you can find in your backyard.

This might come across as a hyperbole, but almost everyone guards their precious jewelry with their life. Diamonds are a girl’s best friend, so are platinum, gold, silver, and every other precious metal on the face of the earth. Everyone loves to indulge themselves at some point of time. Some people go backpacking to the places that held their fancy forever, while some buy something they had always set their heart upon while window shopping. If you belong to the latter category of people, then every time you feel you should be pampered, you might set out to buy some cute jewelry that had caught your eye. A woman has a lot of options when it comes to choosing a jewelry. There are chains, necklaces, earrings, rings, anklets, and everything that you can see on the ramp. However, the classic gold chain is an eternal favorite. A gold chain is an ornament that can be worn by you and your grandmother alike. So, if the precious yellow metal has caught your fancy and you just waltzed into a jewelry shop to buy a gold chain, there are certain things one must take care of. Such as these: The first thing you notice about the gold chain is how it feels in your hands.

Gold has always been a valuable investment over the decades. But for gold coin collectors, the value increases tenfold with some of the most valuable gold coins being auctioned for millions of dollars. You will be surprised by the obscene amount of money people out there are willing to pay to get their hands on a rare and rather unique piece of history. Coins date back centuries when they were first minted and traded as currency in exchange for goods and service. But back then, the value of certain precious metals, as we know today, was quite low. However today, a couple of ounces of gold can easily fetch you a couple of thousand dollars. Keeping the collecting trend in mind, no wonder people are willing to spend this kind of money for a collectible. Here are the most valuable gold coins ever made. The Saint Gaudens double eagle: Easily a Mint State 63 and 65 grade, this coin certainly tops the list of numismatics. Numismatics is the study of coin collecting and deals with such rare antiquities and coins. This $20 gold piece is also considered as a work of ancient Greek art. This gold coin is auctioned according to its various grades, making it a very diverse graded coin with prices ranging from $2 million to $3 million dollars accordingly.