Marbleous! Moonstone is a clear marble with a swirl of one colour and glow-in-the-dark flecks. The part that glows in the dark are the specks which float within the clear part of the glass, rather than the coloured glass cane (so each colour looks the same when viewed in the dark). 

Handmade so marbles do vary. 

This beauty comes in an assortment of colours (yellow version shown here). 25mm. Not suitable for children under the age of 3 as small parts may present a choking hazard.A true classic. So many games, so many variations. Great to collect, swap and compete for. Give a child a handful of marbles and let the good times roll. Some of the old games are still the best. There is something particularly satisfying about watching children discover the pleasure of a traditional toy.