If Art Nouveau is your thing, the exhibit “Artistic Luxury: Fabergé, Tiffany, Lalique” at San Francisco’s Legion of Honor may be of interest. But the Chronicle points out that for the largest collection of Tiffany glassware west of the Mississippi, you can head over to Alan Schneider’s Antique Traders on California Street. He’s gathered the top specimens of Tiffany lamps, vases, even windows, and other craftsmen of the period, and it’s all for sale — if you can afford it.