Au

1. Gold ore:
Gold-bearing ores in nature are commonly found in quartz veins or associated with sulfide minerals. Gold often exists in the form of native gold or silver-gold ores, and is frequently associated with elements such as silver and copper. It is the initial raw material for the gold industry. Gold concentrate or crude gold is extracted through processes such as crushing and beneficiation (e.g., gravity separation, flotation, cyanidation) to provide raw materials for refining.

1、Gold Concentrate
Gold ore is the product obtained after crushing, grinding, and beneficiation (such as gravity separation and flotation) processes. Its main carrier minerals are often pyrite and quartz, with gold occurring in the form of fine grains or inclusions. The gold grade is significantly increased (usually tens to hundreds of grams per ton), and it is rich in valuable elements such as silver, copper, lead, and zinc. It is the core raw material for gold smelting and requires further extraction through pyrometallurgical or hydrometallurgical processes. It is a key intermediate product connecting mining and metal refining.

3. Gold dust:
Natural gold particles found in sediments such as rivers and beaches, a form of native gold with the chemical composition Au, often accompanied by elements like silver and copper. After refining, alluvial gold shares the same uses as gold from other sources, applicable to jewelry processing (e.g., exquisite necklaces and bracelets) and critical connection parts in electronic devices to ensure stable signal transmission.

4. Crude gold bars/ingots:
Gold is a metallic form of gold initially extracted from gold ore, gold concentrate, or recycled materials through pyrometallurgical processes. Its purity is typically between 90% and 99%, and it contains impurities such as silver and copper. It is an intermediate product in gold refining and requires further refining to reach high purity standards. It is commonly used for gold reserves or as raw material in refineries.

5. 24K gold:
Pure gold products with a purity of 99.9% (24K gold) or 99.99% (99.99% pure gold) are typically found in the form of gold bars, coins, or jewelry. They are golden in color, stable in nature, and have excellent ductility. They represent one of the final forms of refined gold and are primarily used in jewelry, financial reserves, high-end electronics, and aerospace—fields with extremely high purity requirements.