The Magic begins wherein the designer develops a design and translates it into reality. This is where the process starts to produce a unique piece; the very initial step is to create a design which is conceptualized in the mind of the jewellery designer, it is drawn on paper and then into the system. Designing software’s is used to increase the productivity, improve quality and accuracy of design, and to maintain a database for manufacturing and design catalogue through CAD (COMPUTER AIDED DESIGN). The CAD software’s enables 2D and 3D image, which gives a complete and thorough view of each part of the final jewellery piece.
RPT (Rapid Prototype system) works on the principle of Direct Light Projection Technology which is similar to 3D printer technology. Once the CAD design file is ready, it is transferred on 3D RPT for prototype and can be made within minutes, which is generally used as a master sample. This RPT is used to make a liquid resin dye which is fully functional and can then be used to manufacture the jewellery.
Mould making is an integral part of the production process. It helps in creating multiple pieces of jewellery of the same design. These designs remain protected and embedded in the mould forever and it is possible to create replicas of the same in future. There are different types of materials used for mould making like natural rubber, silicone and metal. The method used for mould making is called "Vulcanizing".
The production of wax pieces from the rubber moulds made from the RPT master. The rubber mould is placed on the commercial wax injector machine. Molten wax is pressure injected into the mould cavity to create wax models for casting.The process of soldering the wax pieces on a wax stem is called “wax tree”. A sprue is attached to each piece which in turn is attached with the stem. The sprue makes an angle of approximately 45 ℃ degree with the stem. The tree is such that the heavier items are at the bottom of the tree and the lighter ones are at the top.
Casting is a very complex process and requires utmost skilled and experienced casters for the desired final product. The wax tree is placed in steel flask which is then occupied with a slurry of chemical powder which solidify in an hour. The flask is than heated in an electric furnace which melts the wax leaving behind a cavity of tree.
Once the raw casting is clipped off from the casting tree, it has a tiny nub leftover at a place where the gold piece was attached to the sprue. The polisher grinds off this nub using the motorized grinding machine, which acts as an abrasive to smooth the surface of the gold piece/jewellery.
Filing is a technique that helps in removing excess metal or solder from a piece that is being worked on. It is a process wherein the casting layer is removed by using different tools like files and burrs. It gives a smooth finish to the piece. Assembly is the process where two or more component of the same design are joint with the help of solder or laser technique.
Stone setting is the art of securely setting or attaching gemstone in the jewellry. Different types of setting are used to create varied designs; sometimes even combination of two or more setting is also used to make a piece look more appealing. The different types of setting are prong, plate prong, pave, pressure, bezel, bead, flush, fishtail, invisible, miracle plate and channel.
Polishing offers a neat finish and enhances the value of a piece. Polishing involves three steps, tumbling, pre polishing, and ultra-cleaning. Jewellery pieces with diamonds require pre polishing before the diamond is set. This is because once the diamonds are set the area below the diamond portion cannot be polished and may affect the shine of the diamond. Polishing can be done either by hand or by machine. If the jewellery is hand polished, then the craftsman uses different tools like solid buff, soft buff, hair buff, coin buff, single line ball buff, green rouse for shine, platinum polishing rouse, black lustre for removing casting/filling layers, red rouse to impart shine and white lustre to remove roughness.
Rhodium is a sparkling white coloured precious metal. When a piece of jewellery is plated with Rhodium, it gives a white reflective appearance and provides the piece of jewellery better resistance to scratches and tarnish. It is used on yellow gold for creating visually appealing patterns and designs. The use of Rhodium plating on white gold is meant for adding whiteness to the gold, since white gold is not so white in its original and pure form.
Quality control (QC) is a procedure or set of procedures intended to ensure that a manufactured product or performed service adheres to a defined set of quality criteria or meets the requirements of the client or customer. There are three different methods of quality control inspection which includes measurement, visual inspection and mechanical inspection.