Bespoke

                     

Discover all you need to know how jewellery is manufactured at  N  I  A  Z  I

Development Of CAD

We use the latest 3-D CAD programs to design bespoke and custom jewellery pieces. When our designers develop the computerised bespoke model, digitally rendered images are sent to the customer for approval. This gives a very close visual representation of what the finished item will look like and gives the opportunity for any adjustments to be made.

3D Wax Printing

We have two methods of creating a wax model when making a casing mould. If your item is a unique piece it will be designed using the above process and then 3-D printed in wax. Our 3-D printers have been designed and built by our own engineers specifically for this task and print wax to the nearest 10 microns (1/100 of a mm), ensuring the best production quality for your bespoke pendant.

The Casting Tree

The next stage of creating bespoke jewellery starts with the size and mass assessment of waxes. This ensures we select the most appropriate casting options for your piece.

Casting

Once the investment solution has set, the flask is placed in a furnace overnight where the wax burns away, creating a reverse mould. The casting of gold and silver takes place in a vacuum pressure casting machine. A vacuum is applied to the lower chamber, the stopper is lifted in the upper chamber, allowing the precious metal to flow into the mould. When the cast tin is removed, it is immersed in water to cool the alloy and reveal the cast tree.

Cleaning And Hallmarking

After the precious metal has cooled, the rings are removed from the tree and cleaned for hallmarking. Hallmarking is done independently at either London, Birmingham Assay offices. The UK is one of the only countries where hallmarking is a compulsory statutory requirement. The process involves assaying the metal by X-Ray to ensure the metal is the stated quality and then hallmarking the item appropriately. If the piece is particularly small or cannot be stamped, the assay office my laser engrave the hallmark.

Sizing, Setting And Polishing

At this stage our expert team of skilled jewellers will set the stone determined by the client’s order.