Have you got that special brooch that you would like to convert into a necklace without having to do any permanent modifications? What you need is a brooch converter (also known as a pin converter). To make the pendant, thread the pin of the brooch though the tube of the converter and in a matter of seconds, you have a pendant. No soldering or glue required. And the best thing is that the converter can be used again and again. Converters come in horizontal and vertical versions.