Cobalt Yellow/Amber Swirl
Alley Agate Company · 1930s-1940s
Identification summary
A vintage machine-made swirl marble featuring a rich cobalt blue translucent base with internal ribbons of yellow and brownish-amber.
Visible record
- Maker candidate
- Alley Agate Company
- Era
- 1930s-1940s
- Pattern
- Swirl
- Rarity assessment
- Uncommon
- Condition assessment
- Near Mint
- Size
- Standard (approx. 5/8 inch)
- Material
- Glass