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The method is more accurate, with an accuracy of 2 to 3 parts per ten thousand (0.02%), is a method sometimes called cupellation to test feu.La Cupellation involves taking a small sample of object, usually a hole made in a crude bullion. Lire la suite […]
Titillated by my many miners friends, I have to try to clarify their ideas about the origin of gold. One of the first qualities of gold miners, is toughness. Lire la suite […]
African gold dust scams and precious metals tricked hundreds of people worldwide. Lire la suite […]
We have solutions for all purchases, buyouts and precious metals recycling. Lire la suite […]
Stocks and gold reserves of central banks, around 30 900 tonnes (1/5 of the world’s gold reserves) give their significant power on the gold market. As a result, several agreements on gold were established to limit their weight in the market. The first agreement on central bank gold is the Washington Agreement on gold, (26 Lire la suite [...]
aqua regia Refining involves purifying a material or a metal In antiquity the process of purification of precious metals was cupellation. Lire la suite […]
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 […]
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 […]
[vc_row][vc_column][vc_column_text] 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 […]
At Orobel for several years, we regularly buy gold exported from Africa. Lire la suite […]
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 vous propose une synthèse ainsi que les différents liens utiles pour acheter et investir dans l’or, sous la formes de pièces ou de lingots d’or. Lire la suite […]
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Orobel SPRL
29, Rue Saint-Gangulphe
4000 Liège (Belgique)
Orobel GmbH
758, Trierer Straße
52078 Aachen (Allemagne)
Tel: +324 222 45 07
Mail: info@orobel.biz
