The Connoisseurs Diamond Dazzle Stik is a breeze to use. Just twist the base until a bit of blue cleaning solution appears on the brush. Dab onto the stone and the setting, then rinse and dry the gem.

Want to learn how to do a DIY clean that will make a major difference? Here, we ask jewelry pros to give us the inside scoop ...

This machine also gets called into action occasionally to do something totally unexpected and kind of random: fine jewelry cleaning ... a steam wand to make the diamond sparkle.

Do you recommend using a jewellery cleaner machine? 'It really depends on the ... plain metal pieces - it can often be ...