.55″ Akro Agate Blue Moon Marble Black Line Corkscrew UV glow Purple 1950s
USD 21.99 USD
Specifications
| Brand | Akro Agate |
| Year | 1950s |
| Time Period | 1930s |
| Style | Corkscrews |
DOUBLE FEATURE: RARE internal black hairline streak PLUS manganese UV glow. Under 365nm UV light this marble fluoresces bright lavender/purple, confirming manganese in the glass - see UV photo. The black line is fully internal, not a crack or surface damage. Known as a "Black Line" or "Hairline Special" to collectors. Near Mint condition, glossy. Combines two rare Akro Agate variants in one .55"