Gold, with the chemical symbol Au and atomic number 79, has been a fascinating and coveted element for millennia. It was valued and utilized by ancient cultures such as the Egyptians and Sumerians, who extracted it from rivers and mines. The discovery of gold dates back to these early civilizations.
Although gold is relatively rare on Earth, constituting only about 0.004 ppm of the Earth's crust, it has a long history as a currency and store of value. Today, gold is not only used in jewelry and coins but also in electronic components, medical applications, and as shielding material in space exploration. The main production countries are China, Australia, Russia, and the United States, with China playing a leading role in global gold production. The unique and timeless allure of gold extends across various cultures and eras, and it will continue to maintain its significance as a precious and versatile element.