The Ultimate Guide to Gold: Cosmic Origins, Counterfeits, and the Gold Standard

Original author：Syam Studios

Original source：https://www.youtube.com/embed/pOAhJ6mnFWo

The Science & Origins of Gold Did you know that all the gold on Earth was delivered by meteorites and asteroids billions of years ago ? Gold's unique yellow color actually comes from the absorption of blue light, a phenomenon caused by relativistic effects described in Einstein's theory of relativity . It is also incredibly dense, with a single cubic foot weighing approximately 1,200 pounds . Despite this weight, it is the most ductile element; just one ounce of gold can be drawn into a thin wire 50 miles long . 💰 A Brief History of Money For much of modern history, gold formed the backbone of the global economy through the Gold Standard, a system that fixed currency values to a specific weight of gold . But as long as gold has been valuable, criminals have tried to manipulate it. In historical Britain, "coin clipping" was a rampant crime where people illegally shaved small amounts of precious metal from the edges of circulating coins to melt down for profit . The practice was so damaging to the economy that Sir Isaac Newton, serving as the Warden of the Royal Mint, introduced milled (reeded) edges to make tampering immediately obvious . 🦷 Why Do Pirates and Olympians Bite Gold? You have probably seen movie pirates or Olympic champions biting their gold medals. Historically, this was a crude authenticity test because pure gold is a relatively soft metal, rating about 2.5 to 3 on the Mohs hardness scale . Biting could help expose counterfeit coins made of lead, which is even softer than gold . Today, biting is highly discouraged; modern gold coins are usually alloyed with harder metals for durability, and biting them is more likely to damage your teeth than prove authenticity ! Furthermore, modern Olympic gold medals are mostly made of silver (93%) and copper (6%), with only about 6 grams of gold plating . 🕵️ How to Spot Fake Gold Coins Today, investors face a much more sophisticated threat: tungsten. Counterfeiters use tungsten cores because its density (19.25 g/cm³) is nearly identical to gold's density (19.30 to 19.32 g/cm³) . A fake bar with a tungsten core and a gold-plated exterior can easily pass basic weight and dimension checks, as well as surface X-ray fluorescence (XRF) scans .