This is a faceted filla directional carb cap from Kevin Murray. The amazing facet work is by Grampa Facets. Kevin is known as one of the best at the filla technique in glass art today, and this cap shows really shows off his work. The colors and intricate nature of this are really something. Fantastic work of functional glass art. The faceted stem is made of Northstar’s Experimental 31, which is CFL. It’s violet/purple in regular light, yellow in daylight(as shown in photos).