20 Pieces of 7mm TWO HOLE Roseta Cabochons (Flat Back) in MATTE Turquoise VASELINE/URANIUM GLASS - originally from the Czech Republic. There are a number of lots available with TWENTY (20) 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).