MILLENIUM™ METALLIC VITREOUS GLASS TILE IS THE HIGHEST QUALITY TILE. ONLY THE FINEST MATERIALS ARE USED IN A MANUFACTURING PROCESS THAT RESULTS IN A SMOOTH, GLOSSY TILE THAT DOES NOT CRUMBLE WHEN CUT LIKE LOWER QUALITY TILE. THIS RICH, COLORFUL TILE HAS AVENTURINE COPPER RANDOMLY SWIRLED THROUGH THE GLASS WHICH GIVES IT JUST ENOUGH SPARKLE WHEN THE LIGHT HITS IT. 2 SIZES ARE AVAILABLE TO CHOOSE FROM: 3/8" AND 3/4".