C11 - Longwave Fluorescent Mineral Kit (10 Specimens) willemite In regards to the specimen

In regards to the specimen best under shortwave green willemite and red calcite

Filtered Shortwave fluorescent tube: 11 Watts - Short wave bulb is included behind filter glass covering

Under longwave UV fluorescent white response

LED side flashlight helps with nighttime exploration

C11 - Longwave Fluorescent Mineral Kit (10 Specimens) willemite In regards to the specimenEnjoy a extra unique collection of 10 fluorescent mineral specimens that respond and change color under LONGWAVE ultraviolet light. Only about 9 out of 10 specimens will respond under longwave UV aka a blacklight. These do make these specimens harder to obtain. Each specimen ranges in size from 1 to 1 1 2 inches and are labeled and bagged individually in their own seperate baggie. Some specimens may also change to more than one color when exposed to