12 x 8mm Cut & Polished Rectangular Window Beads in VASELINE/URANIUM GLASS - originally from the Czech Republic. These beads are a Beautiful Sapphire Blue with Glowing Yellow Vaseline Glass inclusions in each bead. These are in pristine condition. There are a number of lots available with 10 beads in each lot. They’ve been black light tested and are guaranteed to fluoresce a brilliant neon green under Ultra Violet light (390 - 405nm preferably).