Venetian Glass

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The Venetian glass industry dates back over 1,500 years. A 1291 Venetian law relocated all glass making to the island of Murano. The stated reason for the law was to prevent fire from destroying the wooden buildings of Venice. Speculation behind the true nature of the law was to protect the design techniques and innovations of the glass artisans from being stolen and taken to other regions. In the early 1800’s the political climate forced the Venetian glass industry into decline. In the Mid 1850’s a resurgence of glassmaking in Venice commenced. The beginning of the 20th century glass makers focused on reproducing classical styles and the rediscovery of the lost techniques of early Venetian artisans. Modern glass artisans are innovating new techniques and inspiring creative designs to establish Venice as the glass blowing capital of the World.

Venetian Glass Polished
Venetian Glass Classification
Common Name Venetian Glass
Species Glass
Venetian Glass Optical Properties
Transparency Opaque-Transparent
Dispersion Strength: None
Refractive Index 1.460-1.800
Optic Character NA
Optic Sign NA
Polariscope Reaction Anomalous Double Refraction (ADR)
Fluorescence SWUV: Varies
LWUV: Varies
CCF Reaction Varies based on color
Pleochroism None
Venetian Glass Characteristic Physical Properties
Hardness 4.5-6.5
Streak White
Specific Gravity 2.250-4.550
Toughness Poor
Inclusions Might show swirl lines or glass bubbles.
Luster Vitreous
Fracture Conchoidal
Cleavage None
Venetian Glass Chemistry & Crystallography
Chemical Name Silica
Crystal System NA

Venetian Glass Colors

  • Multi-color Venetian Glass Multi-color
  • Blue Venetian Glass Blue
  • Purple Venetian Glass Purple
  • Red Venetian Glass Red
  • Multi-color Venetian Glass Multi-color
  • Green Venetian Glass Green
  • Yellow Venetian Glass Yellow
  • Blue Venetian Glass Blue
  • Multi-color Venetian Glass Multi-color

Countries of Origin


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Millefiori Glass

Millefiori is Italian for thousand flowers. Multiple colored and clear glass canes are designed in flower-like patterns and then fused together. The glass rods are then cut in cross section reveal the pattern.

Millefiori Glass Venetian Glass
Millefiori Glass Classification
Common Name Millefiori Glass
Tim Matthews


Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.