Cobalt Slag
Akro Agate Company · Early 20th Century (c. 1920s-1930s)
Identification summary
A classic machine-made slag marble featuring a deep cobalt blue translucent base with white opaque swirls.
Visible record
- Maker candidate
- Akro Agate Company
- Era
- Early 20th Century (c. 1920s-1930s)
- Pattern
- Slag / Swirl
- Rarity assessment
- Uncommon
- Condition assessment
- Fair
- Size
- Standard (16mm / 5/8 inch)
- Material
- Glass