Gold is malleable and shiny, making it a good metalworking material. Chemically speaking, gold is a transition metal. Transition metals are unique, because they can bond with other elements using not just their outermost shell of electrons (the negatively charged particles that whirl around the nucleus), but also the outermost two shells. This happens because the large number of electrons in transition metals interferes with the usual orderly sorting of electrons into shells around the nucleus. All the gold that makes up earrings and cufflinks and electronics components today originated in space: According to a 2011 paper in the journal Nature, a meteor bombardment nearly 4 billion years ago brought 20 billion billion tons of a gold-and-precious-metal-rich space rock to Earth. Tracing gold's origin back even further takes us into deep space. A 2013 study in The Astrophysical Journal Letters found that all of the gold in the universe was likely birthed during the collisions of dead stars known as neutron stars. Humans have been decorating themselves with gold since at least 4000 B.C., according to the National Mining Association. From Eastern Europe to the Middle East to the tombs of Egyptian Pharaohs, gold appears throughout the ancient world. A Stone Age woman found buried outside of London wore a strand of gold around her neck; Celts in the third century B.C. wore gold dental implants; a Chinese king who died in 128 B.C. was buried with gold-gilded chariots and thousands of other precious objects. .. Most gold jewelry isn’t made of pure gold. The amount of gold in a necklace or ring is measured on the karat scale. Pure gold is 24 karats. Bars of gold kept in Fort Knox and elsewhere around the world are considered to be 99.95 percent pure, 24-karat gold. As metals are added to gold during jewelry making, the gold becomes less fine and the number of karats drops. For example, 12 karat gold contains 50 percent gold and 50 percent alloys by weight... wanna have a real gold??..deal with us and we will give you the best gold .... at the cheapest price... and we have great deals and offers for you ...wanna purchase a gold? purchase it and pay half of the price and when you receive your gold then you pay the rest later..step by step for 12 months ....we have great happy clients who buy from us anytime..be part of them serious people alone...