The die's faces are supported by springs meeting in its center.
Printed and tested OK
Copyright ©2011 Ovidiu Opresco
Based upon the geometry of the Rhombic Triacontahedron

I've coined the word "Geocube" because it is actually a cube projected on a sphere.
See my other Roosevelt Island Tram designs here:
Slice of Big Apple with Roosevelt Island Tram
The New Roosevelt Island Tram Earrings
The New Roosevelt Island Tram Cuff-Links
The New Roosevelt Island Tram / Pendant / Keyring
Pendant / Keyring with Roosevelt Island Tram
Keyring with Roosevelt Island Tram
Soccer Ball with Roosevelt Island Tram inside
Big Apple with Roosevelt Island Tram inside
Ring with Roosevelt Island Tram
Roosevelt Island Möbius Bracelet with Roosevelt Island Tram

• Related designs:
Rhombic die
Rhombic die (2.5 cm)
Keyring with Rhombic Die

See my New Spring-Loaded Dice:
Spring-loaded 30-sided die.
Spring-loaded Icodie.
Spring-loaded die.
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• Click on PERSONALIZE to order your size.
Available ring sizes:
US Ring Size 6.5
Inside Diameter: 16.92 mm / 0.666 in
Inside circumference: 53.15 mm / 2.09 in
US Ring Size 7
Inside Diameter: 17.32 mm / 0.682 in
Inside circumference: 54.41 mm / 2.14 in
US Ring Size 8
Inside Diameter: 18.14 mm / 0.714 in
Inside circumference: 56.86 mm / 2.24 in
US Ring Size 9
Inside Diameter: 18.95 mm / 0.746 in
Inside circumference: 59.69 mm / 2.34 in
US Ring Size 10
Inside Diameter: 19.76 mm / 0.778 in
Inside circumference: 62.20 mm / 2.44 in
US Ring Size 11
Inside Diameter: 20.57 mm / 0.81 in
Inside circumference: 64.72 mm / 2.54 in
US Ring Size 12
Inside Diameter: 21.39 mm / 0.842 in
Inside circumference: 67.23 mm / 2.65 in

Based upon Self-complimentary Archimedean Spiral.
For best stereo reception you may need a pair :-)

Archimedean Antenna Earrings