Difference between AGT™ Commercial Grade & ULTRA Grade Glow Stones
AGT™ COMMERCIAL GRADE - GLOW STONE COLORS
AGT™ Commercial Grade glow stones are 15-20% brighter
and longer glowing than any other natural stone glow marble,
glow stone or glow crystal on the market today.
AGT™ ULTRA GRADE - GLOW STONE COLORS
AGT™ ULTRA Grade glow stones are 30% brighter & longer glowing than our Commercial Grade glow aggregates and are 40%-60% brighter and longer glowing than any other natural stone glow marble, glow stone or glow crystal on the market today.
ULTRA Grade glow stones were developed in 2015 for architects designing glowing bike paths and pedestrian walkways in city green spaces. Their specification called for the brightest and longest glowing glow stones possible. After some time, AGT™ Glow Labs unveiled the world’s first DIN67510 Part 1 compliant super-luminosity glow aggregate AGT ULTRA™ – which boasts the longest and brightest afterglow in the industry.