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A largely unknown fact is that nickel is used in almost every kind of jewellery. Jewellery manufacturers add it to bulk up and harden metals.  Nickel is a robust, less costly material that is combined with soft metals such as gold and silver. Jewellery makers use it to increase the durability and strength of their products. However, this metal can cause nasty allergic reactions including redness, itchiness, an angry rash and swelling. The only way
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