AI-assisted community identification

Cobalt Blue Slag

Akro Agate Company · 1920s - 1940s

Cobalt Blue Slag by Akro Agate Company, identification view
Community photograph · added 9 May 2026

Identification summary

A classic machine-made slag marble featuring a rich cobalt blue translucent base with hand-gathered style white swirls.

Visible record

Maker candidate
Akro Agate Company
Era
1920s - 1940s
Pattern
Slag / Swirl
Rarity assessment
Common
Condition assessment
Good
Size
Standard (approx. 5/8 inch)
Material
Glass