Looks like a volcano erupting / a tree bark and shrubs opening.
MT ST HELENS SWIRL IRIDESCENT ART GLASS PAPERWEIGHT VOLCANIC ASH SG MS
R W Stephen Iridescent Volcanic Paperweight 1990
Vintage Glass Eye Studio Iridescent Plume Controlled Bubble Paperweight
Mt. Saint Helens Volcanic Ash Iridescent Art Glass Egg Paperweight 1983
1983 Glass Eye Rainbow Iridescent Art Paperweight Mt. Saint Helens Volcanic Ash
Vtg 1991 Paperweight Eric Kvarnes Glassworks Gallery Ocean Tidal Wave Glass Art
