A Bohemian overlay glass posy vase, mid 19th century, the lappeted rim above alternating enamelled and cut glass panels and a knop, on a spreading foot., height 22 cm
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- Knop (glass) - In Georgian glassware, the knop is a bulbous protrusion, usually midway up the stem of the glass. It may be included singly or in groups, and may be hollow or solid. There are many styles of knop including basal, baluster, bell, acorn, cone, flattened, melon and mushroom.
- Overlay Glass - Overlay glass is coloured glass that has been created by sandwiching two or more layers of different coloured glass together. The layers are fused together through a process of heating and melting in a glass furnace, and the resulting glass has a unique colour and depth that is not found in single-layered glasses.
The technique of overlaying glass has been used for centuries, and was particularly popular in the Venetian glass industry during the Renaissance. Different colours of glass were layered to create intricate designs, and then the layers were carved and etched to create intricate patterns and details.
- Cut Glass - Cut glass is glassware decorated with facets, grooves and depressions of various sizes and shapes, made by cutting into the surface of the glass using a rotating abrasive wheel. The glass is ground so the surface consists of facets, which have a high degree of light refraction, so that the surface sparkles.
The techniques of glass cutting had been known since the 8th century BC, and the practice was revived in Bohemia and Germany in the early part of the 16th century and in England in the 18th century. Cutting became the most common method of decorating glass in the second half of the 18th century and the early 19th century.
This item has been included into following indexes:
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Bohemian (Czech Republic) glass wares