Vintage Carnival? Depression? Set Of Ruby Red Glass 6-inch Candle Holder

I do not know when these were made or who made them, they have no markings, but they are gorgeous! Will brighten any space that you choose to place them. Perfect for a holiday table or even an intimate table for 2. Take a look at the coloring the base and top are a rich red but seems to faintly fade to a reddish yellow at the stem. They are approx. 6 inches tall; the base is approx. 4 1/2 wide. Each candlestick weighs approx.14 oz. Quite hefty, and sturdy will last for many more generations. I am not sure how old they are but to me it looks like the 50's. Please view all photos carefully.