15 LBS SLAG GLASS ROCK CULLET AQUARIUM LANDSCAPE FISH TANK GARDEN YARD ART #1202 | eBay
Leland Blue Slag Glass Authentic Slag Glass Decorative - Etsy UK
Remember y'all, slag glass is awesome! This was found by someone on the Texas City Dike and it's so huge that they tripped on it! Picture from Beachcoming Magazine. : r/whatsthisrock
What Is Slag Glass? Antique Works and Values | LoveToKnow