This scent is different from the average Montale fragrance. It's long-lasting like many of them, but it's much more "realistic." The iris is the star. It's a bit dusty, and not sweet. Notes of white musk and orris (and perhaps a bit of citrus) help lift it, giving it a good silliage.
I love true Iris scents. Montale Pure Iris is a pleasure to wear!