|Race of Use|| |
|Planet of Origin|| |
Theoretically; Glass Emeralds didn't come around at least until the Jurassic Era and started out as a very small cluster on the planet of the Greys. They weren't discovered until the Greys explored caves for the first time in 2246.
After the establishment of the Terranovian Empire; the Terranovians discovered a large quantity of these gems. That's when they started testing new missiles with their Terranovian Crystals; however because of the crystal's indestructibility; missiles couldn't be made from the crystals. Later on Glass Emeralds were molded into missiles and tested; leading to a success where their thought crystals failed.