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It holds the distinction of being the world's most expensive precious metal.

It has an atomic number of 45 and is about as nonreactive as gold.

The plating on an item that is subjected to a lot of wear or friction, such as a ring, may only last 6-24 months, whereas a necklace, brooch or earrings which comes in less contact with skin or the elements, or is simply worn less, can retain its plating for ten or more years.

o ensure rhodium plated jewellery lasts as long as possible, keep it cleans with a mixture of mild liquid shampoo and a little water.

Gamma radiography works in much the same way as X-rays screen luggage at airports.

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