This very elegant Line Vautrin Talosel brooch pin features a cornucopia or horn of plenty with branches in dimensional shapes in white and green Talosel, encrusted with green and gold-colored mirrored glass and gilt metal. 
Glass and Talosel is a technique created by Line Vautrin, in which she used cellulose acetate that was fractured into tiny splinters and worked with heat. The process of creating the Talosel jewelry had many stages, including making the mirrors, tinting them, molding the Talosel, and embedding smaller mirror fragments into it.
 
Note: This specific branch shape design was also used to create the famous "Miroir St Hubert", circa 1958, pictured in "Line Vautrin - Miroirs" by Patrick Mauriès, Galerie Chastel Marechal Editions - Copyright 2004 on page 13. (please kindly check our last picture for reference).