Did anyone see the first Tuscon update from Jake Thompson? Apparently he put a question to Richard Drukker (someone to do with the GIA I believe). JT asked how to tell the difference between a filled ruby, a heat treated ruby and a natural ruby. I thought great we are going to get educated here and perhaps Gemporia will stop selling filled rubies because of it. The answer to the question was ...... the Greenland ruby mines have now closed. That's it consider yourselves educated!!!