21hhdw.is ((FLUORITE, minor GALENA)) , FLUORESCENT, $80 MINIMUM BID, Rogerley Mine, Frosterley, County Durham, England, 10 x 6.5 x 3.5 cm, Cabinet | |
These are the famous Rogerly Fluorite that are very Fluorescent and change from green to blue in the sun's UV. ex Dana Wilson MD collection #201. |