Black Slag (Amethyst Base)
Akro Agate Company · 1920s - 1930s

Identification summary
A machine-made slag marble featuring a deep amethyst (appearing black) base with opaque white swirls.
Visible record
- Maker candidate
- Akro Agate Company
- Era
- 1920s - 1930s
- Pattern
- Slag / Swirl
- Rarity assessment
- Uncommon
- Condition assessment
- Good
- Size
- Shooter
- Material
- Glass