Review on Luminous Colored Marble Pieces for Decorative Purposes by Roshan Schram

So these marbles glow in the dark which is good but the whole marble doesn't glow. For us it's just not as cool as the whole marble glows/ball. They look good if you have a lot of them together, but if you play with them individually each of them is not as bright and not as cool (compared to say a glowing sphere/ball).We have a few others glowing balls/balls with flashing colored lights that look great to play with in the dark or when running on a marble treadmill. Seriously, so pretty! But sadly we didn't get enough of that.