What is electroforming in jewellery?
By Jared James · Last updated 21 May 2026
Definition
Electroforming is a process where a thin shell of metal, usually gold, silver or copper, is built up inside or over a mould by passing an electric current through a metal solution, causing the metal ions to deposit gradually onto the mould surface. Once the shell reaches the right thickness the mould is dissolved or removed, leaving a hollow three-dimensional metal form. The technique allows jewellers to create very lightweight pieces with exceptional surface detail, including organic forms and fine textures that would be too fragile to cast solidly.
Frequently asked questions
- Is electroformed gold real gold?
- Yes. The gold deposited in electroforming is real gold; the karat depends on the solution used, and pieces are typically stamped accordingly. The hollow construction is what makes them lighter, not an inferior material.
- What is the difference between electroforming and electroplating?
- Electroplating deposits a very thin layer of metal over an existing object to change its surface colour or appearance. Electroforming builds up a thicker, free-standing metal shell that becomes its own structural piece once the core is removed.
- Is electroformed jewellery durable?
- It is lighter and somewhat more delicate than solid cast pieces because the walls are thin and hollow inside. Electroformed pieces in gold are popular for large statement earrings and pendants where solid gold would be uncomfortably heavy.
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