Uranium Swirl (Black & White)
Alley Agate · 1930s - 1940s
Identification summary
A vintage machine-made swirl marble featuring a dark, opaque base with delicate white swirls that glow bright neon green under ultraviolet light.
Visible record
- Maker candidate
- Alley Agate
- Era
- 1930s - 1940s
- Pattern
- Swirl
- Rarity assessment
- Uncommon
- Condition assessment
- Near Mint
- Size
- Player (15mm / ~5/8 inch)
- Material
- Glass