Living aquatic eco systems with glow in the dark sand. Inside is a baby marimo moss, 2 years old. Shells, wood and blue glass stones included plus your choice of crystal!
Comes in a plastic tank shown, including a lid.
 
Photographed I have pink agate (dyed) crystal as an idea of what yours will look like.
 
I have - snowflake obsidian
- rose quartz
- turquoise
- jade
-clear quartz
- carnealian
- lapis lazulli
-amethyst
-hematite
-jasper
 
Or you can request one at random.
The Eco system pictured is 20cm but this listing is for a 14cm one,  and I have 7cm ones (in my shop)
 
I will be sending them without water in, they just need filling up when it arrives. The marimo will create their own food, ensure they are in natural light or artificial light of some kind. Water change once every 2 weeks or when needed. Marimo grows 5mm a year. 
You could have shrimp in the tank if you chose to.