Pour the mix slowly into your mold, making sure it flows in between all the pieces of glass in your mold but doesn’t cause the glass and resist to shift around. Then tap all around the mold to release any air bubbles that might have become trapped. These will rise to the surface and pop. You can also gently exhale on the bubbles to help them burst.
At this point, do not touch or move your mold. You need to let it sit and cure anywhere from one to three hours, depending on size and thickness. After you’ve worked with this for a while, you’ll get a sense of when it’s ready. But generally speaking, the stone will turn warm as it is curing. You’ll be able to feel the heat it puts out by just letting your hand hover close to the stone. When the stone is no longer putting out heat but starts to feel a bit cold, it’s getting close to ready to pop out.