- Sphere in fluorescent ‘Willemite’ from New jersey (USA)
- Size: 10 cm. (Diameter)
- Weight: 1.500 grams
- *works only with a ‘short wave’ fluorescent light
- Sphere in fluorescent ‘Willemite’ from New jersey (USA)
- Size: 10 cm. (Diameter)
- Weight: 1.500 grams
- *works only with a ‘short wave’ fluorescent light