Brass-based jewellery is made on a copper-zinc alloy that is strong, repairable and good at holding plating. Alloy-based jewellery is made on a white metal, usually zinc-based, that is lighter and cheaper and suits large or intricate cast shapes, but it is more brittle and its plating usually wears out sooner.
Both have a place. The choice depends on price point, design, how often the piece will be worn, and which market you sell into.
Side by side
- Cost: brass costs more and follows copper prices; alloy is cheaper.
- Weight: brass is heavier; alloy is lighter for the same size, which helps with big earrings.
- Strength: brass bends before it breaks; alloy can snap at thin points.
- Detail: both cast fine detail; alloy casts very complex shapes quickly in rubber moulds.
- Plating: brass gives a smoother, more durable plated finish; alloy is more prone to pitting and blistering.
- Repair: brass can be soldered and replated; alloy is hard to repair.
- Compliance: brass usually carries less risk; some white metals contain lead or cadmium.
How to tell them apart
Brass pieces feel denser and, where plating has worn or on an inside edge, show a yellow metal. Alloy pieces are lighter for their size and show a grey or white metal underneath. A magnet does not help, since neither is magnetic. A test report or an XRF reading confirms the composition.
When to use each
- Brass: bridal and premium sets, rings, bangles, CZ pieces and anything worn often.
- Alloy: large, light statement earrings and necklaces, fast fashion lines and low price points.
- Either way: ask for test reports on lead, cadmium and nickel for the exact material your maker uses.
Describing them honestly
State the base metal on listings. Brass base, gold plated is a clear, positive description. For alloy, zinc alloy, gold plated is more useful to a customer than metal or alloy alone. See the most common quality problems in imitation jewellery for issues to inspect for on each.
What this means for a buyer
Choose brass or alloy per product line, not for the whole catalogue. Creston & Co works for buyers only, for a fixed fee agreed in writing, confirms which base each Rajkot maker actually uses and has samples tested at accredited labs before you order. Ask for a free sourcing review.