 Special glasses such as old cobalt medicine bottles, cold cream jars, and many other types of glasses from plates, ashtrays, window panes - to name only a few - are occasionally bought new, just for the purpose.Pulverized or merely fragmented, and made into beads, these glasses yield particularly bright colours and shiny surfaces.Modern ceramic colourants, finely ground broken beads, or shards of different coloured glasses from various sources can be added to create a great variety of styles, designs and decorative patterns in many different colours.