News
The history of precious metals refining
aqua regia Refining involves purifying a material or a metal In antiquity the process of purification of precious metals was cupellation. Lire la suite […]
Density weighing, a simple way to know the gold content of a precious metal
It is sometimes called hydrostatic weighing and principle we have just Archimedes, thanks to him, we know that any body immersed in water displaces its volume in water. Lire la suite […]
How to make a mini-refining and a form of gold assays ?
The refined gold as all precious metals is carried out using « aqua regia », an acid which is a mixture of nitric and hydrochloric acid. Lire la suite […]
About fakes and counterfeit krugerrand
For a number of years, false Krugerrands were produced and manufactured in China. Made mostly with a core of tungsten and gold plated. Lire la suite […]
How is a gold buyout in native, nugget or african flakes form ?
At Orobel for several years, we regularly buy gold exported from Africa. Lire la suite […]
What can we forecast for the gold spot price in 2016 ?
Gold spot price has fallen during the first half of 2015, and has continued to decline in July. But what are the predictions for the price of an ounce of gold for this year end and for the year 2016 ? Lire la suite […]
Orobel’s Banking services
Orobel also offers delivery services for private banks or private equity funds wishing to buy and invest in gold. Lire la suite […]
How platinum and palladium spot price is fixed ?
The London Platinum and Palladium Market (LPPM) is the largest clearinghouse will counter for platinum and palladium exchange. She is responsible for listing the course and the price of platinum and palladium since 1989. Lire la suite […]
Evolution of the design of the Australian Nugget gold coin
Such as the Chinese Panda gold coin, the Australian Nugget gold coin has seen its design profoundly evolve over the years. It is among the parts of a fine ounce and the most pure in the world. Lire la suite […]
Hallmarks and karats in gold jewellery
Hallmarks are used to determine the karat, ie the gold content of a jewel. This article presents the main titrations and karat in jewellery. Lire la suite […]
