Vintage hand blown aurene iridescent sphere shaped studio art glass store paperweight

Up for store sale is a wonderful hand blown art glass paperweight made by Royal Brierley Studios.
It is done with an exquisite relief detailing, has very rich iridescent color, and an aurene textured finish that shines all colors of the spectrum.
It's signed underneath and measures 2 1/2 inches wide by 2 1/4 inches tall.