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A complex set of geologic conditions brought these minerals together to form this beautiful rock
The piece combines smooth
Size: 50 x 40 x 3 mm
Size: 58 x 52 x 30 mm
a clay mineral
Fluorescent White Common Opal Rough Specimen from Turkey Pseudomorph A complex set of geologicYou will receive ONE milky white common opal specimen that is fluorescent with both long and short ultraviolet light. With 254nm short wave UV, it fluoresces a green in areas. Each specimen has unique fluorescence. A good quality, filtered, short wave lamp is needed for best results. (inexpensive multi function UV lamps will not yield good results) If you have a 365nm long wave lamp, you will see white and blue fluorescence. This piece is from nn
