Linked from
The 32 pages that link to Glass, each with the reason it gives.
Silicon dioxideNarrower topic: Silicon dioxide is the main ingredient in many common glasses.
CloisonnéNarrower topic: Enamel is glass formulated to melt and bond during cloisonné firing.
Sodium oxideNarrower topic: Sodium oxide is a network modifier in many commercial glasses.
Vitreous enamelNarrower topic: Vitreous enamel is glass formulated to melt and adhere during firing.