2 1/4 inches across the top and 4 3/4 inches at the bottom. They don't seem to have been overly used, but have collect some dust at the bottom. I see no damages to the candle sticks. There are natural swirls, and bubbles.
They are unsigned just like most of the period Loetz glass are. Since I have been asked for where is the "pontil"; here is my best guess: they were blown from the opening side of the candles where you can see the tops are cut and smoothed out.
The bottoms have no pontil. Wonderful pair of art glass candles.
Please read important information below. Check My Daily 0.99 Cents Deals! The item "Monumental Art Nouveau Loetz 1900 Silberiris Green Iridescent Candle Holders 12" is in sale since Thursday, June 14, 2018. This item is in the category "Pottery & Glass\Glass\Art Glass\Bohemian/Czech\Loetz".
The seller is "sunnyjkw" and is located in Kew Gardens, New York. This item can be shipped worldwide.