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.
Cleaning is must in gemstone
For stubborn dirt, a soft brush can also be used on these types of stones. In hot environments, the heat can cause the water to evaporate and discolor an opal. Jewellers use mechanical cleaning procedures to clean gemstones. Some of these methods can be harmful if done incorrectly, so ensure that the cleaning is being performed by a qualified professional.
One common method is ultrasonic cleaning, which uses frequency waves to clean gemstones. They can be cleaned in the same mild detergent and water solution as other gemstones, and delicately scrubbed with a very soft brush. Designer jewellery can cover the gamut of rings, engagement and wedding rings, watches, necklaces and pendants, bracelets and anklets, cuff links, tiaras and other unusual pieces.
Diamonds are the hardest of precious stones
The word 'diamond' itself is a derivative of the Greek word adamas, which means 'unconquerable'. The diamonds rarity and natural beauty have contributed to making it such an extraordinary and magical gift. Diamonds are the hardest of precious stones. Many people are confused as to how a diamond is priced. It is the undiminished beauty of diamonds.
This does not mean that a diamond cannot be damaged only that they are difficult to damage requiring a very precise strike in an exact location in order to damage the surface. And that has made them so highly prized throughout several centuries. Diamonds continue to hold a deep fascination. As the diamonds is world’s ultimate symbol of love.