20Pcs 20mm Glow in the Dark Glass Moon Lunar Round Dome Glass Cabochons Flatback for DIY Craft Necklace Bracelet Pendant Making

20pcs Glow in the dark cabochons Size: Dia. 20mm/ 0.79 inch. thickness: 5.8 mm. 12 styles 20pcs in total. You will received what you see in the image. 100% Product Satisfaction Guarantee: Glass mertial product, if it was broken in the transportation, Please feel free contact us to request a refund or a replacement. Frequently Questions and Answers: 1. Q: Why the do NOT glow in the dark?: A: The express package has blocked the sunlight source, you should take them out of the package, just expose them to a UV flashlight for 5-10 minutes, then you can see it's glowing in the dark. When you receive your package, you can test them first. 2. Q: Why the reflects very dim glow?: A: Please make sure they all got "charged", put them in flat, do not stacked them. That's the reason some of the do not glow or glow a very dim light.