O56 Chalcedony & Calcite

O56 chalcedony & calcite from Crawford, Nebraska 

lime green chalcedony & red calcite known as watermelon rock due to its food appeal but please do not eat?! 🤣
3.7 ounces weight 2 1/2” x 2” size responds best under midwave and shortwave. Whitish yellow response under longwave.  The purple response is an unknown mineral response.