20hhgd.is ((BORACITE, ANHYDRITE)), $100 MINIMUM BID, Grona Mine, Bernburg, Stassfurt Potash Deposit, Saxony-Anhalt, Germany, 3 x 2 x 1.5 cm , Thumbnail | |
Greenish Tetrahdrons modified by cube on Anhydrite matrix. Five individual lustrous undamaged crystals on the matrix. Higher quality than usual. ex Glenn Davidson collection |