The stones are truly wonderful. I got this for my daughter's birthday party (seven) needed to decorate a treasure chest. The girls (and the boys) were so excited that they have fallen into a 1 1/2 hour craft fever. The long time was the fact that the set consists of 1000 stones, which are about 20 "big stones" there and the rest of 9980 stones are really small to very, very small. We already know of the amazing Lego boxes ... it give it up just a star on the fun factor.