Thanks KC. I had also read that article as well as others that refer to vaseline glass due to the uranium content. I wasn't sure if the yellow hue given off from depression glass and older cut glass was also due to uranium or something else. I have tested some items that I have been able to date such as a Heisey Prince of Wales Plumes Punchbowl and it did fluoresce yellow. I also tested some newer items and they did not. I am a believer, just didn't know if there might be something else to consider. As always, thanks for your help!