What is rhodium and ruthenium bath
Friends and friends, today we deepen two fundamental processes for the finishing of jewelry and in particular for silver: Rhodium and the bath of Ruthenium.
The Rhodiumit consists in covering the jewel with a thin layer of RHODIUM, a very rare and expensive metal (more expensive than gold and platinum!), belonging to the group of the European PLATINUM, white and highly durable.
Rhodium plating allows to make jewelry particularly shiny and creates durable protection against wear and corrosion, thanks to the layer deposited on the jewel, generally of the thickness from 0.1 micron, up to 25 micron(a micron - also called micrometer-is equal to one thousandth of a millimeter).
The deposit of such a layer on the object is obtained by procedure GALVANIC, thanks to which Rhodium particles they are electrically deposited on the jewel without changing its appearance in any way, but making it more valuable, particularly shiny and resistant to the effects of time.
Rhodium plating also allows effectively avoid possible allergic reactions to nickel, in the case of jewelry using such metal.
Here is a classic example of a rhodium bracelet:
RB021-silver rosary bracelet with 10 mm beads
A galvanic treatment similar to rhodium plating is the bath of Ruthenium (other noble and precious metal of the platinum group). Such metal has a particularly high hardness among those used in the process of electrodeposition and allows to obtain an Anthracite coloration, therefore rather dark.
And here is a nice example of a product made with the wise use of rhodium and ruthenium baths, to obtain a double color rendering (white for rhodium, anthracite for ruthenium).
AA001-two-tone 925 Silver Ring-type 1