Small Clear Glass Globe . They are 30 mm x 22 mm. glass vial. They can be used to make Terrarium pendants, a biosphere pendant, a fish bowl, a small aquarium, or simply fill it with a special or favorite token. You can fill them with all kinds of things like sand, mini sea shells, mini fish, resin them or countless other uses. They are small and really cute. The crowns are sold separately. The link is listed below.