Lead crystal glass:
It is consists of at least 24% of lead oxide, is marked with a label of suitable inscription and was invented 1675 in England with 36% of lead oxide admixtures. Lead crystal glass shows a high light refraction and is suitable for decoration by engraving and grinding.
It was invented from George Ravenscroft in 1676. The glass is provided with the addition of lead oxide.
Is the gob, which is taken with the blowpipe from the furnace and is blown up to the parison.
A colourful shining decoration. She consists of metal oxides and is applied filmy with the paintbrush or spray pistol. It is burned in at relative low temperatures.