The glassmaker's craft of using an "optic mold" to create desired interior textures and designs was invented by Roman glassworkers and flourished in Venice in the Middle Ages. Using this ancient "optic" technique, we house a glass bulb in a hand-blown ova
The glassmaker's craft of using an "optic mold" to create desired interior textures and designs was invented by Roman glassworkers and flourished in Venice in the Middle Ages. Using this ancient "optic" technique, we house a glass bulb in a hand-blown ova