Hi there and welcome to the board.
would it be possible to get a photo of the base and a closer, straight on shot of the stem. It definatly appears to be Uranium glass (vaseline).
Are you In the USA ?, It often helps to know where the person is from, gives us a geographical starting place.
Im sure one of the much more knowledgable members will be along and able to Identify it soon
all the best
michelle