Pure gold does not tarnish. Gold items less than 24 carat can show signs of tarnishing because the other metals in the alloy may react with oxygen or other compounds.Know More
Gold jewelry and other items under 14 carat need periodic cleaning. Copper and silver are used in lower carat items. Perspiration, cleaning agents and perfumes can cause these to tarnish. Copper, when reacting with oxygen or other corrosive compounds, produces a green residue. Silver causes black discoloration. Black smudges may be left on the skin when wearing jewelry that is beginning to tarnish.
Polish jewelry often with a soft cloth to remove early tarnish buildup, perspiration or other compounds. Be sure the box, bag or other storage container used for gold is free of sulphur compounds. Some adhesives and fabric treatments, for example, create sulphur dioxide and other sulphuric gases, increasing the rate at which the lesser metals in gold alloy tarnish. Avoid handling gold items after using cleaning chemicals, washing dishes or preparing food. Gold items of lower carat can be plated with 24 carat gold, which prevents any tarnishing in the short term. With frequent wear, the underlying gold alloy is exposed over time and may begin to tarnish.Learn more about Precious Metals & Gems
Real gold should not tarnish or become discolored in any way. The jewelry, however, may cause black smudging on the skin.Full Answer >
The easiest way to tell if something is real gold or gold plate is by holding a magnet up to the piece and waiting for the metal inside the piece to attract to it. If the piece is gold-plated, it is instantly connected to the magnet. If the piece is solid gold, it does not connect.Full Answer >
The high value of gold is driven by three factors: its practical applications, the largely aesthetic desire people have for it and the perceived protection it grants investors as a hedge against currency fluctuations. According to Jerry Bowyer for Forbes magazine, the cash value of all the gold that has so far been extracted amounts to roughly $10 trillion.Full Answer >
Hard to find in nature and durable enough to remain in perfect condition for centuries, gold is unlike any other metal in the periodic table. It has been used as currency and as a means to display wealth and power for centuries, particularly among royalty historically.Full Answer >