The Yooperlite Oloid is a gemstone version of a curved three-dimensional object, discovered in 1929 by Paul Schatz.
The unique and aesthetically pleasing shape of this gemstone Oloid make it the perfect desktop ornament or therapeutic sensory toy.
The Oloid will rock gently on a flat surface when lightly touched or roll with a hypnotic motion on a slightly inclined surface.
Yooperlite also has an interesting feature. It fluoresces under UV light due to the presence of sodalite impurity.