Process of Casting silver Jewellery
A two-step process, investment casting, produces small, complex shapes. Most castings, especially large ones, are made in sand molds. Permanent metal molds are used to make many small, simple parts; shell molding gives greater accuracy for a large volume of semi precision parts.
Molten silver is poured into the cavity and allowed to solidify. Sand, mixed with a binder to hold it together, is pressed around a wooden pattern that leaves a cavity in the sand. Wax or plastic replicas of the parts are molded in accurate metal molds. Top of the line casting equipments are utilized to produce the silver jewellery. When the whole mold is heated, the replica melts, leaving behind a cavity into which silver is poured.
All gemstones have some characteristics
Many gemstones are used in even the most expensive jewellery depending on the brand name of the designer, fashion trends, market supply, treatments etc. Others are too common and are given a semi-precious status. Most gemstones have good hardness and a high index of refraction.
All gemstones have some characteristics falling short of perfection though; even the seemingly perfect Diamond has four directions of cleavage. Since quartz is everywhere especially in common dirt and dust. Any material that is softer may be scratched during ordinary wear. Nevertheless, diamonds, rubies, sapphires and emeralds still have a reputation that exceeds those of other gemstones.
Silver jewellery should be given extra care
Silver jewellery is not expensive. Silver Jewellery has a textured or satin finish so it should be given more care. Do not keep them in contact with oxidized Jewellery, pearls or absorbent stones. Before packing donít forget to dry your wet jewellery. The finishes are achieved with lots of care and it should be maintained accordingly. With clean soft cloth polish your jewellery.
To keep the jewels tarnish free, you can use silica gel packs to keep dry, do not always use body scents on them directly. You can also soak them in warm soap water and use a soft bristled brush. Often a green or black residue is formed on large silver jewels due to the bodyís chemicals. But they can be cleaned easily. Remember to wear your silver Jewellery as much as possible because Wearing them actually keeps them polished and less tarnished. A rinse-off liquid cleaner is best for tarnish to clean your ornaments.