The Solaro calendar is a nice looking and unique way to make a calendar based on the position on the Planets in our Solar System. The starting date is represented by the spheres and the ending date by the rings on the orbits. The configuration is absolutely unique and only repeats every 10 billion years. The look will change for everybody's date. Just tell me what 2 dates you want and I will generate the 3D for you to order. you can use it as earrings or necklace pendant or pin. ( tell me how you want to hook it up) .size is around 5-6cm diameter.
I like the fact that in millions of years someone could find out exactly what date this was whitout any calendar system or time units.