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a clay mineral
Size: 38 x 20 x 10 mm
Lustrous clear tabular apophyllite crystal with This specimen shows the elegant
Faden quartz is mainly found in regions with high tectonic activity
Fluorescent White Common Opal Rough Specimen from Turkey Pseudomorph a clay mineralYou 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
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