Premium Ultra Grade Glow Stone Sample Kit

The Premium AGT™ Ultra Grade Sample Kit contains each of our Ultra Grade Glow Stone sizes (1/2", 1/4", 1/8") and colours; Emerald Yellow, Aqua Blue, Sky Blue. AGT™ ULTRA Grade Glow Stones feature a DIN67510 Part 1 Super-Luminosity compliance rating and exhibit a +30% higher luminosity and glow duration than our AGT™ Commercial Grade Glow Stones. These glow stones are also 40-60% brighter than the average glow stones found online. Favored by architects and artists alike for their sensual aesthetic, these high performance glow in the dark stones are perfect for outdoor trails, bike paths and entertainment areas. 8 minutes of sunlight = 15+ hours of eco-friendly glow!