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. Diamonds are in many colors The color range of diamonds is amazing and has all the shades from light pink to deep pink, yellow to brown, indigo to dark purple, hues of green and blue. In the past, the brown diamonds were considered to be of lesser value than the other colors because jewellers did not think that consumers would find them attractive.If you are interested in buying your first diamond, you have joined the millions of people who appreciate the beauty of this beloved gemstone. While diamonds exist in every imaginable color, some colors are more common than others. However, thanks to a few clever designers, brown diamonds are currently one of the most popular trends in the jewelry industry. One of the reasons why brown diamonds are so popular is that they will coordinate with almost any type of outfit. They are also elegant enough to be worn with eveningwear, and casual enough to go with a pair of blue jeans. The blue diamond is another popular variety. As a result, they have a much higher price than the brown and yellow variants. How to care Gemstone? To remove any detergent, rinse the stone in the same temperature water as the soaking solution. This type of stone can be strung on silk or nylon thread, the silk being a better choice because it fails to accumulate as much dirt as nylon. For diamonds, sapphires, and rubies, bring an equal mixture of household cleaner and water to a boil.Opals contain almost one-third water and are therefore particularly vulnerable to even moderate temperature changes. Remove from heat and allow the gemstones to soak in the solution until it cools. Thermal shock happens when a stone is instantly transported from one extreme temperature to another. They are all nature's gifts to us. There are more than 40 popular gem varieties and many rarer collector gemstones.
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