AI-assisted community identification

Black Slag

Akro Agate Company · 1920s-1930s

Black Slag by Akro Agate Company, identification view
Community photograph · added 10 April 2026

Identification summary

A classic vintage glass marble featuring a dark, near-opaque base with white glass swirled throughout, creating a 'slag' or 'cloud' effect.

Visible record

Maker candidate
Akro Agate Company
Era
1920s-1930s
Pattern
Slag / Swirl
Rarity assessment
Uncommon
Condition assessment
Near Mint
Size
Standard (approx. 5/8 inch)
Material
Glass