| 21270: Gypsum - $20 Yorketown, Yorke Peninsula, State of South Australia, Australia Miniature - 4.5 x 4.3 x 2.3 cm 39 grams Fluorescent (LW/SW) Ex George English Specimen status: Available Send an email with specimen number to order A translucent to transparent gypsum
crystal with minor inclusions. Notably mostly for the
accompanying, somewhat tattered, George English label, dating the
specimen to sometime before 1944. Fluorescent under both
longwave UV (blacklight) and shortwave UV.
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