This particular kit was created by Horizon Group USA, which makes quite a variety of children's crafts. I forgot to take a picture of the box but you can see the product here. (It is now called a Friendship Stone Kit but I am pretty sure it is the same as the Memory Stone Kit.)
The kit came with 4 bags of plaster (enough for two stones), a mold, a spatula, a paint brush, paint, glitter glue, stickers, jewels, a plastic mat, gloves, and a mask.
To make the stone, we had to mix the plaster with water in the mold. This was pretty easy to do, however, the plaster started to harden before my daughter could smooth over what would become the bottom of the stone. We tried to add more water before the plaster was too hard. It was to no avail. We were left with a bumpy bottom. Also, the plastic mat is in no way big enough to shield the surface you are working on. I am glad that we had put down extra newspaper--we needed it! Below you can see how the bottom of our stone dried.
Once dry, the stone came out of the mold rather easily. However, some sections were pretty brittle and began to crumble.
As my daughter painted the stone, more pieces crumbled off. She was a good sport about it. She said: "It is art, so it is ok." She did have a good time painting it, adding the glitter glue, and gluing on the jewels. I was able to glue some of the broken pieces back on.
I am glad that my daughter had fun with this project. However, I really would not recommend it because the plaster dries way too fast for children to work with it. Also, it is too brittle and breaks apart easily.