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How did Louis Comfort Tiffany’s Favrile glass reflect the Art Nouveau style?

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fish of core-made glass — glassware Fish of core-made glass with “combed” decoration, Egyptian, New Kingdom, 18th dynasty (c. 1363–46 bc). In the British Museum. 0.141 m × .069 m.

Louis Comfort Tiffany’s Favrile glass served as a quintessential expression of the Art Nouveau style through its emphasis on organic forms, innovative textures, and atmospheric effects.12

Reflecting the movement's core aesthetic, Favrile glass was characterized by:

Organic and Sinuous Forms: Consistent with the Art Nouveau preference for nature-inspired shapes, Favrile pieces were often freely shaped, mimicking the delicate, undulating lines found in flower stalks, vine tendrils, and other natural motifs.12
Iridescence and Color: Tiffany utilized unique coloring techniques to achieve a signature iridescent, pearl-like sheen. This was intended to replicate the natural, weathered appearance of ancient buried glassware, aligning with the movement's interest in both historical inspiration and the expressive quality of light and color.13
Impressionistic Effects: By experimenting with textured surfaces—such as incorporating crushed glass, bubbles, or layered threads of colored glass—Tiffany created mysterious, impressionistic pieces. These techniques allowed the glass to transcend traditional decorative functions, turning the material into a medium for rhythmic, organic beauty that defined the Art Nouveau aesthetic.13