OligoceneFountainbleu, France Truly a natural wonder, this gogotte formed within turbid waters which were saturated with calcium carbonate thirty million years ago: superheated water extruded through crevices into a deposit of extraordinarily fine white silicate sand; over eons, swirls and eddies coalesced into a gorgeous sculpture-like form. Tiny quartz crystals produce the subtle sparkle of the surface. A typical freeform, abstract form, this specimen is a fine natural sculpture. Measuring 11 x 9 x 4 in