The filigree design over the skull symbolizes ever growing renewal over the ghost of the past. This is the original design as featured on Kickstarter. It became their #1 most funded sculpture project of all time. Small is pictured sitting in the hand. See pic of all 3 sizes together for comparison.

Product Name "Cat Skull Ring". Designed by Japan.

Want to know more puroduct detail? Watch movie.
The material of movie is Silver Glossy.
Available in either stainless steel (antique bronze & gold plated) or silver.

The default size is 20.6 mm inner diameter but you can customize the size to your liking.
Click personalize to choose your US ring size.(Size support: # 8 to # 11.)
Please refer to a this page.

Conversion chart for ring sizes

US Ring Size      Inside diameter
       8                         18.1mm
       9                         19.0mm
      10                        19.8mm
      11                        20.6mm

Please also see other designs.
Shop here.
http://www.shapeways.com/shops/forma

Detailed Tibetan Sugar Skull design, 1.5mm thickness.