A technique with 5,000 years of history
Lost-wax casting is not a trend or a recent artisan fashion. It is one of the oldest manufacturing techniques known to humanity, with over 5,000 years of documented history. Ancient Egyptian goldsmiths used it to create jewellery for pharaohs. Pre-Columbian craftsmen in Colombia and Peru employed it to create ceremonial gold figures. Ancient Greek bronzesmiths mastered it perfectly. And today, in workshops around the world — including ours in Barcelona — it remains the preferred technique for creating unique, one-of-a-kind pieces.
The process explained without jargon
The name says it all: at some point in the process, the wax disappears. And in its place, metal remains.
1. Sculpting in wax. Everything starts with a block of special jewellery wax — a soft, forgiving material that is easy to work with simple tools. The jeweller sculpts the piece directly in this material.
2. Investment. Once the wax sculpture is ready, it is attached to a metal rod (called a sprue) and submerged in a special plaster mould called investment. This plaster is heat-resistant and will perfectly reproduce the details of the piece.
3. Casting. The mould goes into a kiln at high temperature. The wax melts and flows out through the sprue — hence "lost wax". What remains is a plaster mould with a cavity exactly matching the sculpted piece. That cavity is filled with molten metal — in our case, sterling silver at nearly 1,000°C.
4. Finishing. Once the metal has cooled, the plaster mould is broken (it cannot be reused — which is why every piece is unique). The raw metal piece appears and must be cut, filed, polished and finished. It is meticulous work that can take hours.
Why it remains irreplaceable
Lost-wax casting allows forms that are impossible by other means, each piece is literally unique, and the process connects the creator to the piece in a way no machine can replicate.
