O57 Chalcedony & Calcite fluorescent minerals Kit includes UV blocking safety

Kit includes UV blocking safety glasses and 10 fluorescent mineral samples that are labeled and bagged individually

Under longwave or shortwave some of the best fluorescent material on the planet

Mexico responds green under shortwave and a cream / sky blue under midwave and longwave UV

The purple response is an unknown mineral response

Sizes come in 2 1/2 to 3 1/2 inches in size

O57 Chalcedony & Calcite fluorescent minerals Kit includes UV blocking safetyO57 chalcedony & calcite from Crawford, Nebraska lime green chalcedony & red calcite known as watermelon rock due to its food appeal. 3. 6 ounces weight 3 1 2x2 size responds best under midwave and shortwave. Whitish yellow response under longwave. The purple response is an unknown mineral response.