When light passes through a piece of Sommerso Murano glass, something magical happens. Rich colors appear to float inside crystal-clear glass, creating incredible depth and a jewel-like brilliance that changes from every angle. The effect is mesmerizing—and entirely handmade.
Sommerso, which means "submerged" in Italian, is one of the most recognizable and technically demanding techniques developed on the island of Murano. While the technique itself dates to the early twentieth century, it is rooted in the centuries-old tradition of Murano glassmaking that has made the Venetian island synonymous with exceptional craftsmanship. Today, Murano artisans continue to preserve these historic techniques, creating works of art that are admired by collectors and design enthusiasts around the world.
The History of Sommerso Glass
Although Murano has been producing extraordinary glass for more than 700 years, the Sommerso technique is a relatively modern innovation.
During the early 1930s, renowned Venetian designer Carlo Scarpa began experimenting with layering colored glass beneath thick crystal while working with the celebrated Venini glassworks. His designs marked a departure from the ornate decorative styles of earlier centuries, embracing clean forms and striking color combinations that celebrated the beauty of glass itself. Scarpa's experimentation helped modernize Murano glass while honoring the island's centuries-old traditions.
Following World War II, Sommerso reached the height of its popularity during the 1950s and 1960s. Artists such as Flavio Poli created dramatic sculptural vases featuring vivid layers of blue, green, amber, ruby, and amethyst glass. These bold works became icons of Italian Mid-Century Modern design and remain highly sought after by collectors today.
As described in the Montecito Journal article "Sommerso Vase," the technique represented a remarkable combination of artistic vision and technical mastery. The article notes that the illusion of colors suspended within one another—without ever blending together—is what makes Sommerso one of Murano's most captivating achievements.
How the Sommerso Technique Is Made
Creating Sommerso glass requires extraordinary timing, precision, and years of experience.
The process begins with a gather of molten colored glass collected from the furnace. Rather than decorating the surface, the glassmaker repeatedly submerges the hot glass into additional pots of molten glass, each containing either another color or clear crystal.
Each immersion adds another perfectly smooth layer surrounding the previous one. Between each layer, the glass must be carefully reheated to maintain the proper working temperature. If the temperature is even slightly incorrect, the layers may crack, distort, or blend together.
Once the desired layers have been created, the master glassblower shapes the piece by hand using traditional tools and controlled breaths through the blowpipe. The finished work appears seamless, with crisp, distinct layers suspended inside one another.
Because each layer expands and cools differently, Sommerso is widely regarded as one of the more technically demanding Murano glassmaking techniques.
Why Does Sommerso Look So Different?
Unlike painted glass or surface decoration, the colors in Sommerso exist inside the glass itself.
The thick outer layer of crystal acts almost like a magnifying lens, giving the inner colors remarkable depth. As light passes through each layer, it bends and reflects differently, producing changing tones and optical effects that seem to shift as the piece is viewed from different angles.
This extraordinary sense of depth is what makes authentic Sommerso so captivating. No matter how many times you admire a piece, it reveals something new.
Is Sommerso the Same as Cased Glass?
The terms are sometimes used interchangeably, but they are not exactly the same.
Cased glass is a general term for glass made with one layer enclosed within another. Sommerso is a specific Murano technique that builds multiple submerged layers with exceptional clarity and sharply defined color separation. While cased glass is produced around the world, Sommerso represents the refinement of the technique by Murano's master glassmakers.
Collecting Authentic Sommerso Murano Glass
Many vintage Sommerso pieces were produced during the mid-twentieth century, although contemporary Murano artists continue to create stunning examples today.
As with all genuine Murano glass, authenticity comes from both the craftsmanship and the place of origin. True Murano glass is made on the island of Murano by skilled artisans using techniques that have been passed down through generations.
A Timeless Murano Innovation
Nearly a century after its invention, Sommerso remains one of the most admired expressions of Murano artistry. It combines technical mastery with elegant simplicity, allowing color, light, and crystal to become the decoration itself.
Whether displayed as a sculptural vase, decorative bowl, paperweight, or work of art, Sommerso glass captures the extraordinary creativity of Murano's master artisans. Every piece represents generations of knowledge, patience, and craftsmanship.
As Italy Segreta notes in its exploration of Murano's ancient craft, today's artisans continue to preserve these remarkable traditions despite increasing challenges from rising production costs and mass-produced imitations. Choosing authentic Murano glass not only brings home an extraordinary work of art—it also helps support the artisans who keep one of Italy's most treasured artistic traditions alive.
Further Reading
Other Murano Glass techniques explained:
Avventurina - The Sparkling Secret of Murano Glass: What Is Avventurina?
Millefiori - What is Millefiori Glass?
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Montecito Journal. Sommerso Vase. An excellent overview of the Sommerso technique and its importance in Mid-Century Murano glass. https://www.montecitojournal.net/2024/12/10/sommerso-vase/
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Italy Segreta. Murano Glass: Venice's Ancient Craft. A fascinating look at the history of Murano glassmaking and the challenges facing today's artisans. https://italysegreta.com/murano-glass-venices-ancient-craft/
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Italia.it. Murano and the Glass Arts. The official Italian tourism website explores the centuries-old history of Murano glassmaking and its importance to Italian craftsmanship. https://www.italia.it/en/veneto/venice/murano/things-to-do/murano-and-the-glass-art
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Museo del Vetro (Murano Glass Museum). Explore the history of Murano glass through one of the world's premier museum collections dedicated to Venetian glass. https://museovetro.visitmuve.it/en/home/
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Venetian Heritage Foundation
An organization dedicated to preserving and promoting Venice’s artistic and cultural heritage, including the craftsmanship and traditions that define the Venetian region. https://www.venetianheritage.org/
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