I only found examples of Conch Spoons in Tiffany patterns. They are a serving spoon with a uniquely shaped bowl reminiscent of the inside of a shell.
Shown in Lap over Edge (Bugs and Leaves) by Tiffany (9 1/4 inches)
Shown in Olympian by Tiffany
Shown in Strawberry Vine by Tiffany (9 1/2 Inches)
Shown in Wave Edge by Tiffany (9 1/8 inches)