<br>Features:<br><br>Reliable material:<br>The package includes 450 pieces glow in the dark stones in various colors, and they are made of poly resin, non-toxic, safe to use, will not cause health effects to people and animals, or plants.<br><br>Glowing effect: <br>These glow rocks with luminescent pigment can bright especially when fully charged for 2 hours in the sun or bright indoor light, adding much warmth to your fish tank or garden or somewhere else.<br><br>Specifications:<br>Material: poly resin<br>Colors: random colors<br>Size: approx. 0.55 inch /1.4cm<br><br>Package includes:<br>450 x Fish tank decorations rocks<br><br>Notes:<br>Due to the different monitor and light effect, the actual color may be a little different from the picture's.<br>Since the size above is measured by hand, the size of the actual item you received could be slight different from the size above.