Size chart silver ring "hammertime" (shield-shaped)
Minimum circumference: 53.5 mm
Minimum diameter: 16.7 mm
With a nerdy touch
- General/multidisciplinary
- Human anatomy
- Architecture
- Astronomy & space exploration
- Biology
- Chemistry
- DNA
- Ecology
- Engineering
- Entomology & arachnology
- Fight period poverty
- Physics
- Gemma Correll
- Medicine
- Geography
- Geology
- Glow in the dark
- Herpetology
- Arts & hobbies
- Malacology
- Mammalogy
- Marine biology
- Meteorology
- Ornithology
- Paleontology
- Rainbow/pride
- Technology
- Mathematics
