Hand picked & selected by Erik Rintamaki.
Each Yooperlite® is unique and one of a kind! You'll receive (1) Yooperlite.
Small: less than 1 ounce.
Medium: less than 2oz average
Large: less than 4oz average
Quarter shown in images for size reference
Please note: you will need a quality UV light in order to see the Yooperlite "glow"
To see the fluorescent (glow) effect you must use longwave 365nm filtered UV lights, also available in the Flashlights category at www.yooperlites.com