Panamerican Cobbles

These Panamerican Cobbles are white with swirls of red, yellow, green, and blue on the surface.  They are iridized to have an extra shiny reflective surface.  These marbles come in packs of 12 or 100 marbles.  They are approximately 22mm or 7/8" in diameter and usually range between 20 - 23mm in diameter.