Blue and White Swirl
Alley Agate · 1930s - 1940s

Identification summary
A classic machine-made swirl marble featuring a translucent to opaque cobalt blue base with delicate, flowing light blue or white swirls.
Visible record
- Maker candidate
- Alley Agate
- Era
- 1930s - 1940s
- Pattern
- Swirl
- Rarity assessment
- Common
- Condition assessment
- Near Mint
- Size
- Standard (approx. 5/8 inch)
- Material
- Glass