GORGEOUS SOLID COLOR 3/4" (20MM) IRIDESCENT PENNYROUNDS THAT ARE 5MM THICK. DON'T BE FOOLED BY THE TRANSPARENT IMITATIONS WITH THE COLOR PAINTED ON THE BACK. WE FEEL OURS ARE THE BEST ON THE MARKET. THESE ARE SOLID COLOR GLASS IN LUXURIOUS COLORS. SOLD IN FULL S.F. SUBWAY STYLE MESH BACKED SHEETS OF 224 TILES OR LOOSE IN 10 PIECE BAGS.