Diptyque 6.8 oz. 34 Boulevard Saint Germain Home Fragrance Diffuser Refill The home fragrance diffuser perfumes a room while adding decorative flair. Its faceted oval glass vessel, in the emblematic shape of the Maison, creates a prismatic effect in which the fine rattan reeds appear multiplied. Glass, perfume, and rattan become one, bringing a touch of poetry to any indoor space. Designed to perfume large spaces, it faithfully diffuses Diptyque's signature scent: fresh, green, .