Barovier & Toso Efeso Vase, Amber-Brown with Air Bubbles, Italy 1968

Hold the vase up to the light—and what was just a dark amber begins to come alive. Thousands of tiny air bubbles, each one a different size and position, float in the glass like rising effervescence in a resting glass of champagne. It is precisely this effect that has made Ercole Barovier's "Efeso" series one of the most important Murano classics of the 20th century since its introduction at the 1964 Venice Biennale. The color is not created by molten glass, but by a "hot coloring without melting" technique developed by Barovier himself: metal oxides are placed between two white-hot, transparent layers of glass—the heat triggers chromatic reactions that no two pieces can identically reproduce.

This vase from 1968 shows the rarer amber-brown variant with warm amber and gold tones, interspersed with darker oxide gradients. The classic Efeso silhouette—spherical body, narrow neck, widely flared lip—comes into its own with dimensions of 19 cm height and 16.5 cm diameter. On a sideboard, in a display cabinet, or as a solitaire on a side table, it is not simply decoration, but a collector's item with provenance and significance: a piece of Murano design history from the hand of one of the most important glass designers of the 20th century.