Yooperlite Tumbles*

*Price is for ONE piece, intuitively picked for you. The pictures represent the quality and sizing you can expect to receive, however please note that each stone is unique and one of a kind so there may be slight variations in appearance. “Yooperlites” contain a variety of sodalite with an impurity that reacts to the specific UV wavelength of 365nm. This wavelength was developed to detect cat urine, as well as for use in manufacturing processes. Fluorescent syenite has minimal fluorescence with a 395nm wavelength. In most cases, syenite is not fluorescent. In most cases, sodalite is also not fluorescent. The suspected source of this variety of syenite that has a fluorescent form of sodalite is believed to come from central Ontario. The rock was transported to the Michigan area 8,000 to 10,000 years ago by glaciers and/or by icebergs on Lake Algonquin, a larger predecessor lake to Lake Superior. The east coast of Lake Algonquin was in the area of the fluorescent syenite deposit. Thus, o