Beware New Ruby Treatment.

Lead glass filled Rubies have been around for a while now. With a trained eye you can spot the difference in lustre on occasion but it's easier to identify if you can see the "flash effect" caused by the difference in optical properties. Slight problem, now they have got around flash effect by using additives other than lead. This produces a very good effect, which is much harder to recognise. It's still breaking news for the moment and when I have more information I'll let you know. The gist is, if you are offered too good to be true Rubies, think! Take Care Damian