High Grade Silver
925 Sterling Silver is an alloy of silver containing 92.5% pure silver and 7.5% other metals. Fine silver (99.9% pure ) is generally too soft for producing functional objects. In Sterling Silver, the silver is usually blended with copper to give strength, while at the same time preserving the affability of the silver and a high precious metal content. This is ideal for making silver jewellery.
The European Union’s (EU) Nickel Directive limits the amount of nickel that may be released onto the skin from jewellery and other products. This type of measurement is distinct from measuring the percentage of nickel that exists in an alloy’s composition. The Nickel Directive’s “migration limits” are as follows:
- 2 micrograms per cm² per week for post assemblies inserted into pierced ears and other pierced parts of the human body.
- 5 micrograms per cm² per week for other products intended to come into direct and prolonged contact with the skin.
The term “nickel free” can be confusing since jewellery marked “nickel free” is still allowed to contain a very small amount of nickel. However, it is such a tiny amount that it takes extremely sensitive instruments to measure it.
What is “Rhodium”?
Rhodium, a member of the platinum group, is a shiny white metal that is highly reflective, durable, and expensive. It is often used as a hardening agent for platinum. In the jewellery Industry, rhodium is plated on other metals to increase radiance and eliminate dullness and tarnishing.