What is zinc in jewellery?
By Jared James · Last updated 21 May 2026
Definition
Zinc is a bluish-white metal used in jewellery mainly as an alloying component rather than on its own. It is blended into yellow and white gold alloys to adjust colour, hardness and workability, and with copper it forms brass. In lower-cost fashion jewellery, zinc alloy is cast easily into intricate shapes and then plated with silver, gold or rhodium. The trade-off is that the plating tends to be thin and the underlying metal can cause skin reactions in sensitive wearers.
Frequently asked questions
- What is zinc alloy jewellery?
- Zinc alloy jewellery is made from a base metal composed mainly of zinc, often with small amounts of aluminium, copper and magnesium added, then plated in a precious or decorative metal finish. It is popular in fashion and costume jewellery because it casts easily and holds fine detail at low cost.
- Is zinc alloy jewellery safe to wear?
- Modern zinc alloy jewellery is generally considered safe for occasional wear. Older or very cheap pieces may contain lead, which raises concerns for skin contact, so it is worth buying from reputable sources. If you have metal sensitivities, solid precious metal is a more reliable choice for everyday wear.
- What role does zinc play in gold alloys?
- In gold alloys, zinc is used in small amounts to improve fluidity during casting, reduce porosity and adjust colour. It is one of several metals, alongside copper, silver and palladium, that jewellers blend with pure gold to create the specific karat and colour they want.
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