Gold Aurene Glass Bowl with Etched Leaf Design

• Irridescent Glass - Iridescent glass has a shimmering or rainbow-like appearance due to the way it reflects light. It is created by applying a thin layer of metal oxides to the surface of the glass while it is still hot and malleable, which then creates an interference effect that produces a range of colours as the light reflects off the surface. The exact colours and patterns created by iridescent glass depend on the specific types of metal oxides used and the techniques used to apply them.
  
  Iridescent glass was first developed in the late 19th century, and quickly became popular for use in decorative art glass and stained glass windows. Some of the most famous examples of iridescent glass were created by artists such as Louis Comfort Tiffany and his studio, who used it extensively in their distinctive lamps, vases, and other decorative objects.
  
  

• Manner of .... / Style of ..... - A cataloguing term where the item, in the opinion of the cataloguer is a work in the style of the artist, craftsman or designer, possibly of a later period.
• Etched - Glass decorated with an etched design, which is achieved through marking out the pattern, protecting the area that is not be etched, and then immersing the object in acid to dissolve the surface of the unprotected area. With some glass objects, such as cameo glass, there may be several layers of different coloured glass, and part of the top layer is dissolved leaving the bottom layer as the background. The longer the time of exposure of the object to acid, the deeper the etching.
  
  The word etching is also sometimes used to describe another method of decoration, where wheel grinders were used decorate the surface, but this technique is usually known as engraving.
• Decor Bois - "Decor bois" is a French term that translates to "wood decor" in English. It refers to decorative elements painted on porcelain items that simulate decorations in timber, such as carvings.
• 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.
  
  

• Aurene Glass - Aurene glass is an iridescent coloured glass developed by Frederick Carder (1863-1963), while working at the Steuben Glassworks in the United States. Frederick Carder was an English glassmaker who emigrated to the United States in the early 1900s. He managed the Steuben Glass Works from 1903 to 1932, including the period after it was taken over by Corning Glass in 1918. Aurene is very similar to Tiffany's favrile glass, the colour obtained by combining metal and non metal glasses, onto which a solution of stannous chloride is sprayed, giving a velvety sheen to the brown, red, gold, blue and green colours.
• Everted - An everted rim is an outwardly turning or flaring outwards rim, as seen the rims on jugs, vases, bowls and dishes.

This item has been included into following indexes:

• Steuben Glass Works (United States) - glass makers 26