Brown on White/Pale Blue Swirl
Alley Agate · 1930s-1940s

Identification summary
A classic machine-made swirl marble featuring a dark chocolate brown to black ribbon winding through a milky white base with a subtle blue cast.
Visible record
- Maker candidate
- Alley Agate
- Era
- 1930s-1940s
- Pattern
- Swirl
- Rarity assessment
- Uncommon
- Condition assessment
- Near Mint
- Size
- Standard (approx. 5/8 inch)
- Material
- Glass