AI-assisted community identification

Alley Agate Selenium Ghost Swirl

Alley Agate Company · St. Marys Period (1932-1949)

Alley Agate Selenium Ghost Swirl by Alley Agate Company, identification view
Community photograph · added 5 March 2026

Identification summary

This marble is a classic example of Alley Agate's production from their St. Marys, West Virginia facility. It features a characteristic 'Ghost' base—a translucent glass that is not quite clear but not opaque. The combination of blue and Selenium-based red swirls is a highly collectible color scheme, particularly due to the UV reactivity of the red glass.

Visible record

Maker candidate
Alley Agate Company
Era
St. Marys Period (1932-1949)
Pattern
Swirl
Rarity assessment
Uncommon
Condition assessment
Near Mint
Size
Player (15mm / 0.59 inches)
Material
Glass