I have no doubt that your piece will glow green under a blacklight. Several companies have made 'golden amber' or 'honey amber' that glows green. The way that color is achieved is by increasing the uranium salts from about 2% (normal vaseline/canary yellow glass) to 10% or more. Here are a couple of examples from WMF:http://www.vaselineglass.org/wmftrio.jpghttp://www.vaselineglass.org/wmf2a.jpg
The little dog figurine is by Boyd in the first link above. It also glows green and is a contemporary piece.
Thomas Webb also made a similar color.
I even have some cut pieces that glow green. here is a covered sugar bowl that I obtained recently.http://www.vaselineglass.org/honeyamber160.jpg
Someplace in my computer, I have info for a patent from about 1925, that describes a patent for a color process that uses a heavy percentage of uranium dioxide to made a 'red henna' coloration. (think hair dye for the 'henna' color).
I was curious about the amount of beta waves being emitted from a piece that increases the amount of uranium salts. A friend of mine has a geiger counter and I took a couple of pieces to him for testing. First, we tested a control piece of regular yellow-green glass. the setting was set at "1X" and the needle went to about 70 on a range that topped out at 100. We then tested the honey or golden amber piece. At '1X', it buried the needle. at the 10X setting, it buried the needle. at '100X', it put the needle up to about 70 and clicked away like a cricket farm!
The radiation emitted is beta waves, which dissipate at a distance of 18-24 inches. The radiation can be blocked by putting it in a glass cabinet if you are concerned about the radiation. If it still is a concern, I would gladly offer to reimburse you for your cost and would pay the postage and I could take it off your hands! LOL
Mr. Vaseline Glass