A single water clear gypsum crystal (variety selenite) rises 6.7 cm above a matrix of massive to crystalline gypsum. This 'sword' crystal is slightly rounded, likely naturally water worn (a common phenomenon in gypsum). Unusual form from this famous and prolific locality, at which gypsum is rare (or at least rarely noted): of the 9118 Tsumeb Mine mineral specimen photos posted at Mindat, only 9 include gypsum. Previous collection catalog card (which accompanies the specimen) gives a November 1979 acquisition date. Previous dealer label with a $350 (!) price tag. Superb condition. Self standing. Illustrated at Mindat.