Vintage Jewellery – If you are interested in collecting costume jewellery, be sure to stay conscious of the condition. Costume jewellery, while expensive, can be a great investment. However, if a piece shows wear it will lose value. A piece of costume jewellery that has been treated well can be a treasure for years to come. The stone is an important part of a piece of jewellery so should be considered carefully. Choose a stone that goes well with your skin tone or the kind of clothes you wear and reflects your personality.