The image shows an egg-shaped art glass paperweight, which appears to be a vintage piece featuring pink and purple iridescent swirls with aventurine or bubble accents, similar in style to creations by Glass Eye Studio or other mid-to-late 20th-century studio glassmakers.

The current market value for a vintage 3.5-inch studio art glass egg paperweight like yours generally ranges from $15 to $40, depending entirely on the specific studio maker and condition.