- 197 views
Nicotra di San Giacomo jewels are in nickel free 925 silver embellished with a gold bath to choose from 4 colors: yellow, pink, white and black. Today we present to you his majesty Ruthenium, the valuable and rare BLACK GOLD.
Those who choose black gold are looking for an exclusive and unusual jewel that is not particularly sparkling but without giving up the charm of more discreet flashes and sparkles. It is a color that is gaining momentum among fashion lovers and this is not surprising because it is a color that suits everyone and is particularly beautiful when combined with other types of gold. It can be worn both on an elegant dress, but also combined with jeans and leather.
But how is the particular color of BLACK GOLD obtained? Thanks to Ruthenium, a very rare metal found in platinum minerals. Small amounts of ruthenium can increase the hardness of platinum and palladium as well as make titanium more resistant to corrosion.
Its name comes from the Latin Ruthenia, which means Russia and was discovered in 1844 by Karl Ernst Klaus.
This very rare element was mined in the Ural Mountains and was found in the Americas. Very small, but commercially important quantities have also been found in Ontario and South Africa.
Due to the difficulties related to its obtaining and due to its particular chemical-physical characteristics, ruthenium is available on the market in extremely small quantities and this justifies its particularly high price.