Dave Osburn Modern Glass Handblown Orange Iridescent Vase. Dave was a glassblower at Blenko glass for over two decades before opening his own studio in Milton, WV, in the old Gibson glass building. The vase is crystal rolled in orange frit. It is about 4 1/2 inches tall and about 4 1/2 inches at the widest part. It has the Osburn Modern Glass sticker and is stamped with the "O" and blowpipe that Dave used. There are no chips, cracks, or other issues.