The image shows a concentric millefiori art glass paperweight featuring multicolored floral glass canes (murrine) in vibrant red, blue, and green patterns arranged in circular rings around a central magnified bubble. 

Design and Features

• Pattern: Concentric rings of colorful floral canes ("thousand flowers").

• Colors: Predominant rows of deep red, bright blue, and soft green-and-white flower murrine.

A 4-inch diameter puts this item into the "Magnum" size class for art glass paperweights, which increases its value to a range of $45 to $120. 

Smaller standard versions (2 to 2.5 inches) are far more common, making this larger, heavier footprint much more desirable for collectors looking for a substantial desk centerpiece.

Value Breakdown by Market Tiers

• Unsigned / Studio Export ($45 – $75): If the base is completely smooth and unbranded, it fits comfortably into standard vintage mid-century export categories. 

• Attributed Murano Workshop ($80 – $140): If there are remnants of a foil import label or documented characteristics tied to prolific 20th-century Venetian makers like Fratelli Toso, prices rise accordingly