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 live. Thousands of tiny air bubbles, each one a different size and position, float in the glass like rising bubbles in a still 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 Venice Biennale in 1964. The color is not created by molten glass, but by a technique of "hot coloring without melting" developed by Barovier himself: metal oxides are placed between two white-hot, transparent layers of glass—the heat triggers chromatic reactions that no second piece can identically reproduce.

The vase presented here, dating 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.