48 Pieces Marbles Glow in The Dark for Kids Mixed Colors Luminous Glass Marbles Runs for Kids Games DIY and Home Decoration(1.4 CM/ 0.55 Inch)

They do glow

I feel like a lot of the reviews I read before purchasing complained about the size, which is unfortunate because the product measurements are provided in the description. This led me to leave a picture review. The marble on the left was purchased from a different seller, it is typical marble size 15/16 mm. The marble on the right was purchased from this seller, it is the 8 mm size. Perfect for my needs and I love the little case they came in!

These arrive broken but were obviously broken prior to transport. Most were fine. Beautiful colors. Glowed nicely. Cool under black light.

Not at all as described, size is half what they list as the actual size!!!

They can be pretty neat in dark, when they do glow. But that doesn’t happen. Mine do not glow because you have to shine direct light on them in order to make them glow. Little disappointed.

Love them!

No broken marbles, they glow decently after being in a lit room and turning out the light - but shine a bright light directly on them for a minute and they’ll glow brilliantly bright. Pretty colors, I wire wrap them for suncatchers and they add a lovely and interesting element - that is, the few I managed to snatch without my 5 year old noticing! Lots of fun in his marble run sets! A bit pricey but worth the money.

So these marbles have glow in the dark specks in them, which is neat, but the entire marble does not glow. For us, this just isn't as cool as the entire marble/ball glowing. They look nice when you have a big bunch of them together. When you play with them one at a time, however, each one isn't as bright and doesn't look as cool (in comparison to a light up marble/ball, for instance). We have some other light up marbles/balls which have flashing, colorful lights, that look amazing when played with in the dark or when put through a marble run track-- they are seriously so neat! But these unfortunately fell short for us...