How Lab-Grown Diamond Jewelry Is Manufactured: From Stone to Finished Piece
Lab-grown diamond jewelry is a product where two separate production lines meet: first the stone is made, then the stone is turned into jewelry. In this article we explain both lines in plain terms. If you are curious about what a lab-grown diamond is, first take a look at our what is a lab-grown diamond article.
Producing the stone
Lab-grown diamonds are grown from a carbon source in a controlled environment. There are two common methods: HPHT (high pressure, high temperature) and CVD (chemical vapor deposition). In both, the crystal forms on a small seed crystal. The grown rough stone is then cut and polished, as with a natural diamond.
Cutting, polishing and certification
The rough stone is shaped to the desired cut (round, oval, baguette, pear and so on). Diamonds and lab-grown diamonds are delivered with GIA or IGI certificates. We explained how to read a certificate in our IGI certificate article.
Jewelry design and CAD
Once the stone is chosen, the jewelry is designed on the computer. The seat, prong structure and body suited to the stone size are drawn at this stage. If there is a reference image or drawing, the CAD team makes it ready for production. See the jewelry CAD design and prototyping page for details.
Model and casting
The design is turned into a model and cast in the chosen metal (gold or silver). After casting, the piece comes out raw; it is cleaned and shaped by hand. Where necessary, parts are joined by a welding process.
Stone setting
The lab-grown diamond is placed in its seat by the master and fixed with methods such as prong, channel or pavé. Setting directly affects the durability and appearance of the product. For techniques, see the stone setting, plating and finishing page.
Finishing and hallmark
In the last stage the surface is polished or given the desired texture, and rhodium or plating is applied if needed. A karat hallmark is stamped on every product.
What should you expect from a manufacturer?
- Delivery with a GIA or IGI certificate for the stone
- A karat hallmark on every product
- Approval of size, setting and surface on the sample
- A written quote for price, time and minimum quantity
Ready stock or made to order?
Only Panther and Melis are in ready stock. All other lab-grown diamond jewelry is made from scratch to order. For the process and order flow, you can read our made-to-order production guide. Customer-specific designs are never produced for others, and a non-disclosure agreement (NDA) is signed on request.
Product examples and quote
For our lab-grown diamond product groups, take a look at the lab-grown diamond jewelry manufacturing and lab-grown diamond tennis bracelet manufacturing pages. For a quote, fill in the quote form or write to info@oskasilver.com; price, time and minimum quantity are confirmed at the quotation stage.