RESOURCES
Resources for brands
A collection of technical insights, manufacturing know-how and industry perspectives drawn from our experience in fine jewellery production.
Metal Casting: a process shaped by centuries
Metal casting has played an important role in jewellery manufacturing for centuries. Today, processes such as lost-wax casting combine this long manufacturing tradition with advanced technology, bringing new levels of control, precision and consistency. There is something fascinating about seeing how a simple investment flask becomes the starting point for such a precise transformation. Inside, molten gold flows through the cavities left by the wax, gradually taking its shape and reproducing even its smallest details. Technology plays an essential role, but successful casting still depends on human expertise. Temperature, alloy behaviour, mould preparation and casting parameters must all be carefully managed. Even with advanced equipment, challenges such as porosity, incomplete filling or surface defects can appear. Understanding their causes, adjusting the process and learning from every casting are essential parts of achieving consistent quality. At D’Or Joiers, our team continues to study and refine th
Cold metal forming: where industrial precision meets jewellery craftsmanship
How in-house tooling, decades of expertise and industrial pressing processes enable the creation of high-quality jewellery at scale, with consistency, precision and lasting value.
Electropolishing: the finishing science behind a flawless surface
How electropolishing refines precious-metal surfaces to a uniform, high-purity finish — and why it matters in fine jewellery.
Personalisation in fine jewellery: from a brand's vision to a unique piece
How personalised design and manufacturing let brands create truly distinctive jewellery without compromising on consistency or scale.
The platinum era: working with the most demanding precious metal
Why platinum is enjoying a resurgence in fine jewellery, and what its properties demand from a manufacturer.
5-axis CNC machining for high-precision jewellery components
How advanced CNC machining delivers intricate forms, consistent tolerances and exceptional surface quality at scale.
Sustainability in jewellery manufacturing: our commitments in practice
Recycled metals, full traceability and recognised initiatives — how responsible practice shapes the way we work.