TBC Decorative Marbles: Cobalt Blue 100% Glass Marbles. Vase Fillers Use in Floaral Arrangements, with Candles, Aquariums, Wet or Dry. Great for an Eye Catching Centerpiece. Can Also Be Used in Games. Aprox 75 Marbles Per Container. (Silver Added to Blue During Mfg to Create Deep Colbalt Blue Color) DECORATIVE MARBLES GAME MARBLES