How Are Lamp Work Glass Beads Made
Glass lamp beads are made in small cottage workshops by heating glass rods, known as canes, over a natural gas flame. Once the glass is molten, it is wound into a base shape, pressed into a mould, and further refined into the desired design. To create the holes, copper wire is used and then later dissolved in nitric acid once the bead is complete.
The process allows for limitless design possibilities, including intricate surface decorations and various colours. Interestingly, the term "lampwork" originates from the early practice of using the flame of an oil lamp to melt the glass.
Types of handmade glass bead decorations
These beads are crafted by "painting" trails of molten glass to create unique pieces of art, using techniques that date back over a thousand years.
Key decoration styles include:
- Goldstone (Aventurina): A glass paste containing copper powder that provides a shimmering inner sparkle. This process was discovered on Murano in the early 17th century and is available in gold, blue, or green.
- Foil Inlays: Silver or gold foil is inserted beneath the top layer of glass for added brilliance.
- Roses: Also known as paperweight beads, these feature rosebuds set against satin glass and are encased in a clear crystal dome.
- Swirls: Decorative patterns applied to the surface or core of the bead.
- Sommerso: A technique involving multiple layers of coloured glass.
- Millefiori: Meaning "a thousand flowers," this involves incorporating slices of multicoloured glass canes into clear glass to create intricate patterns.
- Dichroic Glass: A high-tech process originally developed for the aerospace industry. It involves vacuum-depositing layers of quartz and metal oxides to create a finish that shifts colour depending on the light.
- Chevrons: First produced in the 1500s, these are drawn glass beads featuring multiple moulded layers. We currently stock reproduction chevrons made in India in the 1980s.
The beauty of these beads makes them an excellent choice for a jewelry focal point or as a unique accent.
Venetian glass beads
These beads are produced on the island of Murano. The industry dates back to the Renaissance, when the Roman glass industry evolved into a major bead center. In 1292, the Doges of Venice mandated that glass makers move to Murano to prevent furnace fires from destroying the city's wooden homes. The trade was strictly controlled by the Guild of Glassmakers, and workers were forbidden from revealing secrets or emigrating under the threat of death. By the mid-16th century, Venetians had perfected many of the major glassmaking and decorating techniques still passed down by word of mouth today.
Moretti, established on Murano in 1911, initially focused on chevron and African mosaic beads. They eventually expanded into styles such as millefiori, Sommerso, and painted roses. In 1968, they developed murrine pendants, which became highly popular souvenirs.
Additionally, you may notice a copper colour on certain brass pieces. This occurs during the firing process when heat depletes the zinc on the surface layer of the brass alloy, leaving a higher percentage of copper visible.
Indian Glass Beads
Beaded jewellery is an essential part of Indian culture. While India historically imported European beads—dating back to the Roman Empire and the 15th-century age of exploration—the country is now a major producer of glass, metal, silver, wood, and semiprecious beads.
The manufacturing process is organised into specialised guilds based on materials and techniques, a system similar to that of Ancient Egypt. Most of these beads are kiln-fired, using a process similar to lampworking but with a different heat source.
Over the years, the quality and techniques have improved significantly. India now produces intricate glasswork inspired by Venetian artisans. While they may not match the original Venetian beads in every detail, they serve as high-quality, cost-effective alternatives. Additionally, Indian glass has a distinct, hand-worked aesthetic that is perfect for designs requiring a more rustic look. We are particularly fond of the chunky, foil-lined "Mexican" style beads, which have become popular for their bold shapes and vibrant colours.
Care for Glass Beads
The white powdery core is from the China clay used as release agent when the glass is wound onto the metal rod.
The process of making glass is chemical. It is therefore best to clean your beads to ensure there is no residue left on the beads. This also makes them sparkle and shine. Soap and lukewarm water work well. There is no need to use stronger solutions.