The diamond jewellery manufacturing process is a detailed, multi-step operation that combines artistry with technology. Here’s a step-by-step breakdown of all the processes your jewellery goes through before it reaches you.
Designing:
Designers work on initial sketches manually or using Software like coral draw/illustrator or procreate. A detailed 3D model or CAD of the jewellery piece is created using software like Rhino or Matrix Gold.
RPT or Camming:
The CAD design is used to create a wax model via 3D printing, this process is called the camming process and the wax model is also called a Cam piece. Multiple wax models are assembled into a “tree” for batch casting. A CAD design (from software like Rhino, Matrix Gold, or Jewel CAD) is converted into a 3D print file (STL). A wax 3D printer prints the piece layer by layer.
Casting:
The wax model tree is covered with paste made using investment power to form a mold. The wax is melted away in a kiln, leaving a cavity. Molten gold, platinum, or another metal is poured into the mold. The metal solidifies, and the ceramic mold is broken away to reveal the rough casting.
Why Lost-Wax Casting is Ideal for Jewelry
- Precision & Detail: Lost-wax casting allows for highly detailed designs, capturing even the smallest features like engravings, filigree, or intricate textures.
- Flexibility with Materials: It can be used for a wide range of metals like gold, silver, platinum, and even alloys designed specifically for casting.
Cost-Effective for Small Batches: This process is ideal for small runs or custom designs, making it easier and more economical than traditional methods for unique or high-end jewelry.
Pre-Polishing and Assembly:
Pieces are removed from the casted tree manually. The rough casting is cleaned, filed, and pre-polished and prepared for setting. This process removes rough textures, casting marks, or oxidation from the raw metal after casting.
Stone Setting:
Prong, bezel, pave, channel, and other techniques are used depending on the design. Stones are set into their designated places by skilled artisans or setting machines. Diamonds are set ensuring the security of the diamonds.
Final Polishing:
The jewellery is high polished to a mirror finish. A thin layer of rhodium is applied for a bright white finish. Rhodium is often done on prongs or metal around the diamond to match the white tone of diamonds.
Quality check:
Every piece is checked and inspected for quality, structural integrity, proper diamond setting, Make sure diamonds are properly set and won’t fall out, finish, check metal purity, diamond carat weight, and dimensions. color and Usability. Hallmarking and other inscriptions such as IGI code on diamonds and SGL on metal is also checked.
Certification:
Every Emori product comes with certifications such as SGL and for high-value diamonds, certification of IGI (for lab grown diamonds) are provided with details like Color, Clarity, Cut and carat of the diamond used in the jewellery.
Packaging
Packaging diamond jewelry manufacturing is a crucial final step that not only ensures the protection of the piece but also contributes significantly to the overall presentation and brand image. A well-designed packaging experience enhances customer satisfaction and is often an essential part of the jewelry’s luxury appeal.
