What is oxidised jewellery?
By Jared James · Last updated 21 May 2026
Definition
Oxidised jewellery is metal, most often silver, that has been deliberately treated with chemicals to produce a darkened, aged surface finish. The most common agent is liver of sulphur, which reacts with the metal to form a dark grey to black patina. Jewellers use oxidation to add contrast, depth and an antique quality to pieces, often leaving recessed areas dark while polishing the raised surfaces bright. The finish is a surface effect and can wear away gradually with use.
Frequently asked questions
- Does oxidised jewellery wear off?
- Yes, because oxidation is a surface treatment, it can slowly wear away from the high points of a piece through friction and cleaning. Many jewellers can re-oxidise a piece if the finish fades, and some people like the gradual reveal of silver underneath.
- How do you care for oxidised silver jewellery?
- Keep it away from silver polishes and chemical cleaners, which are designed to remove exactly the darkening you want to preserve. A soft cloth and plain water will clean the surface gently. Store it separately to avoid scratching.
- Can you oxidise gold jewellery?
- Gold oxidises far less readily than silver because it is a more chemically stable metal. Jewellers can achieve some surface darkening on low-karat gold alloys, but pure gold and high-karat gold are effectively immune. Silver and copper alloys take oxidation most readily.
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