Blue Art Glass Vase by Whitefriars - 20cm Height
A Whitefriars blue art glass vase, rectangular in shape with blue overlay section with ground pontil, height 7.87 in.
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- Pontil Mark - A pontil mark, also known as a pontil scar, is a distinctive mark or scar found on the base of certain types of glass. It is a remnant of the glassblowing process and is particularly associated with handcrafted items made prior to the widespread use of automated manufacturing.
The pontil mark is created during the final stages of production. After the glassblower has shaped and formed the glass object, it is removed from the blowing iron. At this point, the glass object is often attached to a solid rod called a pontil rod or punty for further shaping, finishing, or attaching additional components. The attachment point is typically at the base of the object.
Once the glass item is complete, it is detached from the pontil rod, leaving behind a mark or scar on the base. This mark can take various forms, such as a rough or irregular surface, a concave or slightly recessed area, or a small circular scar. The presence of a pontil mark indicates that the item was handcrafted rather than mass-produced.
Collectors and historians often use pontil marks as clues to determine the age, authenticity, and production methods of glass or ceramic pieces. Different types of pontil marks may suggest different techniques used in the production process. For example, an open pontil mark is one where the scar is left as an exposed, roughened area, while a closed pontil mark occurs when the scar is smoothed or covered in some way. It's important to note that not all handcrafted glass items have pontil marks, as some artisans developed alternative methods for finishing their work. In Edwardian times the pontil mark was oftern ground off leaving a concave circle in the centre of the base of the object.
The use of pontil marks diminished with the advent of industrialization and automated manufacturing processes in the 19th and 20th centuries. - 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.
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