Introduction

Murano Island in Venice, Italy, is a well-known center of the handmade glass industry. It is where beautiful and unique pieces are created daily and sold all over the world. However, did you know that many techniques are used to produce these stunning pieces of art? In this article, we are going to look at murrine glass and compare it to millefiori, as well as other Venetian techniques.

What is Murrine Glass

When making murrine glass, the artisan creates a colored pattern inside a special glass cane called a “murrina” in Italian. When we talk about more than one such cane, they are called “murrine”. These designs are revealed when the cane is cut into cross-sections. The designs can be basic or complex, abstract or symbolic, for example, faces, flowers, or even people’s faces and depictions of animals. 

History of Murrine Glass

Murrine glass dates back to the Phoenicians from around 1200 BC. This technique was also used in Egypt, and in 61 BC, the Roman politician and military commander Pompey brought back murrine glass vases from Alexandria. Some had geometric designs while others were floral. Many of the floral patterns were created by a technique called millefiori, which fuses together cross-section pieces of numerous murrine glass canes.

Having discovered these vases in other lands, the Romans were so fascinated by them that they started to create their own, crafting murrine canes and creating millefiori glassware with them. However, the secret to their methods was lost after the fall of the Western Roman Empire. 

However, in the 15th century, after much experimentation, the glass artisans of Murano revived the technique. Murrine and millefiori glassmaking techniques rose in popularity in the 19th century. Vases, bowls, and other pieces of artwork were produced by the famous Salviati Glassworks and Vincenzo Moretti. Production reached its peak in the following century, with glassworks such as Barovier and Toso creating stunning pieces using these methods. 

How is Murrine Glass Made?

Murrine glass is made from murrina glass canes, which have a pattern inside. The technique is complicated and requires a great deal of skill from the artisan. However, murrine glass can be made in a variety of designs and colors, making it versatile.

To make murrine glass, molten glass is heated to a temperature of between 1,200 °C  – 1,400 °C. It is then cooled down slowly and cut into layers of the same thickness. Each layer is coated in turn with another color of glass, heated, and then cooled down again. This is repeated until the glassmaker has the design he or she wants. The next step involves attaching the glass to two rods, one at each end, and then pulling until it is several meters long. This cane is then cut into cross-sections, which all have the same internal design. They can be used to cover the surface of another glass piece such as a sculpture or vase while the glass is still hot. Alternatively, slices of different murrine can be arranged inside a mold and heated so that they fuse to form a single piece of artwork, such as a pendant, a pair of earrings, or larger pieces such as picture frames and decorative plates. 

What is Millefiori Glass?

The word “millefiori” translates from Italian as “a thousand flowers,” and many Murano Glass objects are created using this technique. Many people associate this very technique with Murano Glass itself, without realizing that Murano masters are capable of many more amazing designs and use multiple glassmaking techniques, which we’ll discuss later.

Millefiori dates as far back as ancient Egypt, and there is evidence that the technique was used in Alexandria in the 2nd century BC. In the 1st century BC, the Romans copied the technique, and then it was rediscovered by the Venetians in the 15th century. It is still a much-loved technique, and thousands of Millefiori glass pieces are produced every year in Murano. It is worth noting that real Millefiori pieces are never mass-produced but still handmade, making each piece unique. Although after its rediscovery by the Venetian masters, Millefiori glassware has been produced all over the world, the millefiori glass produced in Murano has always stood out as special. The level of craftsmanship and artistic value of Murano Millefiori glass is unmatched in the world.

To make millefiori glass, a large number of murrine canes of different colors are heated until they fuse. While still hot, the cane is stretched and then cooled slowly. Finally, it is sliced in cross sections to produce discs with flower designs. Once this has been done, the discs are applied onto a glass object such as a vase or bowl. The result is a stunning, colorful piece of glass artwork with a design that doesn’t fade. Millefiori can also be set in gold or silver to make jewelry. 

How is Millefiori Different From Murrine Glass?

Murrine and millefiori seem very similar and people sometimes use them interchangeably, but they mean different things. Murrine glass involves developing detailed patterns by fusing several layers of colored glass to make a single “murrine” cane. The artisan has to create a design on each layer before they are fused. 

Millefiori, on the other hand, is created by fusing numerous murrine rods. The artisan creates the pattern after the rods have been stacked together, not on each one.

What Other Techniques Are Used in Murano Glassmaking 

There are many other glassmaking techniques used by Murano artisans to create glass masterpieces. Let’s take a look at some of the most popular.

Sommerso    

Sommerso means ‘submerged’ in Italian and is a popular technique used for making vases and sculptures where the artisan wants the layers of color to stand out. 

A clear glass core is dipped into molten colored glass, cooled, and then dipped into another color of molten glass. This process continues until the desired effect is reached. This technique is often used to make vases and sculptures where the interplay of colors is important.

Avventurina

This technique is called “avventurina” thanks to a mineral, avventurine, found in nature. It is copper colored and produces an unusual shimmer. Like with many other styles of Murano Glass, the artisans of Murano invented the Avventurine technique to imitate this mineral, which was costly to extract. When crafting avventurine glass, the artisans create a sparkling effect by adding shavings of metal, generally copper, to the molten glass. The procedure is intricate as the furnace has to be kept at the right temperature to stop the metallic particles from oxidizing and losing their radiance. When this is done with precision, the glassware has a beautiful shimmer thanks to the copper particles entrapped within the glass. The technique is often used to make intricate pieces of jewelry or add sophistication to glass animals and birds.   

Fenicio

Fenicio is a type of glass with patterns that look feathered or festooned. It is an old glassmaking technique, thought to be inspired by ancient Phoenician designs. To produce a piece of Fenicio artwork, layers of colored glass threads are added to the molten glass, which is then feathered into beautiful patterns. When this has been done, the glass is blown and shaped with the patterns staying intact during the procedure. It is often used to make vases, bowls, and jewelry.

Bullicante

Bullicante is an interesting technique in which air bubbles are intentionally created in the glass as a regular pattern. It is often used to make sculptures, paperweights, vases and bowls. To achieve this effect, the molten glass is impressed with a tool that creates indentations in the glass. Another layer of glass is fused on top of this. The indentations trap air bubbles when the glass is shaped, creating this unusual and striking effect. 

Chalcedony

This technique goes back to the Renaissance and is named after the gemstone, Chalcedony. To create the marble-like multicolor appearance, metal oxides are mixed into the molten glass, resulting in a colorful look. The amounts of the metal oxides added are a secret kept by the Murano glassmakers. The glass is mottled, has the look of natural stone, and not one piece looks the same as another.

Ice Glass or “Ghiaccio”

Ice glass has, as the name suggests, the appearance of crackled ice. To create it, the artisan has to cool down the glass mixture quickly so that the surface cracks. It is a unique look and one that suits decorative pieces like vases and bowls. 

Incalmo

Incalmo is a technique that requires the artisan to be precise. Different colored pieces of glass are fused, and the temperature of each piece must be the same. If not, they won’t fuse properly. This technique is often used for sculptures and vases and shows the talent of the artisans in being able to blend colors perfectly.

Lattimo

Lattimo glass is milk-like and has been produced since the Renaissance. To create this effect, tin oxide is added to the molten glass. This gives the glass an opaque appearance. In modern-day Murano, it is used in conjunction with clear or colored glass for stunning effects and complex designs.

Final Thoughts

There are similarities between murrine glass and millefiori in that millefiori uses murrine glass rods and both create striking patterns when the canes are cross-sliced. However, the techniques are different. In addition, millefiori produces mainly flower designs, while the ones produced by murrine glass are more varied. In addition, there are many other techniques used by Murano Glass masters to create glassware, which, while very different from Murrine glass and millefiori, are still popular and well-known. 

This range of techniques, invented by the local artisans and the unmatched combination of incredible skill and artistic talent, has made Murano Island the undisputed world center of art glass and handmade glassware.