What Is Copper Electroforming? The Art Behind Our Unique Gemstone Jewellery
Introduction
If you’ve ever admired the warm glow of copper engulfing a gemstone and wondered how it was made, you’re not alone.
At Sarathena Jewellery, many of our signature pendants are created using a process called copper electroforming — a fascinating blend of science and artistry that gives each piece its one-of-a-kind look.
In this guide, we’ll explore what electroforming is, how it’s done, and why it makes our jewellery so special.
What Is Copper Electroforming?
Electroforming is a metal-building technique that uses electricity to grow copper onto the surface of another material (Often a gemstone, crystal, or organic element like a leaf or shell).
The process begins by painting the non-metal object with a conductive layer, then submerging it in an electrolyte bath containing a copper solution and loose copper material to transfer onto the painted pendant.
When an electric current passes through the bath, pure copper slowly deposits onto the conductive areas — forming a smooth or bumpy, natural metal shell around the object.
Once completed, we like to darken the copper to give it a more antique aged look and feel, as well as allowing the natural copper deposits to really stand out.
In short: electroforming lets us sculpt with copper.
Why It’s So Loved in Jewellery Making
Electroforming has become popular among artisan jewellers because it allows for:
- Organic, natural shapes — copper flows around the stone’s edges rather than being forced into a uniform bezel.
- Durability and strength — the layer of copper hardens into a solid, protective casing.
- Uniqueness — no two electroformed pieces ever come out identical, making each pendant truly one of a kind.
At Sarathena Jewellery, we use electroforming to celebrate the raw, untamed beauty of natural gemstones, from shimmering amethyst to vibrant malachite.
The Step-by-Step Process
Every electroformed pendant starts by hand:
- Preparation – The gemstone is gently cleaned and sealed.
- Conductive coating – A fine layer of graphite or conductive paint is applied where the copper will adhere.
- Electroforming bath – The stone is suspended in a copper-rich solution for several hours (or even days).
- Finishing touches – Once the copper layer reaches the perfect thickness, it’s cleaned, polished, and sealed to prevent tarnish.
This slow, detailed process is why each electroformed pendant from Sarathena takes time. It’s handcrafted down to the molecule.
Copper Electroforming vs. Other Jewellery Techniques
Unlike traditional casting or wire wrapping, electroforming doesn’t rely on pre-made moulds or heavy soldering.
Instead, the metal grows naturally over the stone, capturing its smallest details. The result is a pendant that feels both ancient and modern, blending craftsmanship with chemistry.
How to Care for Electroformed Jewellery
To keep your copper jewellery glowing:
- Avoid wearing it in water or during exercise.
- Store it in a dry place or a soft pouch.
- Gently polish with a jewellery cloth - no harsh chemicals are needed.
Over time, copper may develop a soft natural patina - a mark of authentic, handmade craftsmanship.
Why We Love It
Every copper electroformed piece at Sarathena Jewellery tells a story — of artistry, patience, and transformation.
It’s a process that mirrors nature itself: slow, deliberate, and endlessly unique.
Explore our full Electroformed Collection to see the beauty of this technique brought to life.
