Refined Gold

or, or affiné, diamant, diamant taillé, diamants bruts, orpall, sierra léone, extraction diamant, extraction or, exportation or, exportation diamants, vente d'or, vente de diamants, diamnt bleu, diamants rose, diamant jaune diamant vert, diamant rouge, orpall suisse, orpall sierra léone, pierre précieuse, gemmes

Gold Refining

Once the extraction and the separation operations have been made, the gold is refined. The crude metal is purified in several ways.

The most common is by aqua regia : H + B = Precipitate + H2O

The cheapest refining process is the Miller process that refines impure gold with chlorine gas and allows 99.95% purification. Another process, Wohlwill’s, makes it possible to electrolyze the gold to achieve the highest purity (99.999%).

Gold can be purchased and physically held in ingots, bars and coins. A part of that is available to different financial markets. Since 1919, gold listing has been used worldwide as a reference by five banks in London: Barclays, HSBC, Deutsche Bank, Société Générale and Scotia Bank. In March 2015, the physical gold listing, also known as fixing, was modernized.

The 96-year old price fixing mechanism has been replaced by a more transparent electronic auction mechanism. The fixing is now governed by the stock exchange operator ICE. Purchase and sale offers are updated in real time and the gold price is updated every 30 seconds. The gold is also ranked in the form of forward or future contracts on LME (London Metal Exchange).

or, or affiné, diamant, diamant taillé, diamants bruts, orpall, sierra léone, extraction diamant, extraction or, exportation or, exportation diamants, vente d'or, vente de diamants, diamnt bleu, diamants rose, diamant jaune diamant vert, diamant rouge, orpall suisse, orpall sierra léone, pierre précieuse, gemmes