Gorgeous, Gold, Iridescent, Decorative, Glass Lamp Shades- (Steuben?)

Description

Gorgeous, Gold, Iridescent, Decorative, Glass Lamp Shades- (Steuben?).
When my grandmother gave these shades to me years ago, I was told they were made by Steuben. My Grandmother had numerous Steuben pieces… she loved them. However, I can’t find a mark on them even though they are identical to many of his pieces.