#SPYR 56:  9 x 4.5 x 2 cm (3.5 x 1.8 x 0.8 inches) - $20

Neat small cabinet sized specimen featuring a single penetration twin pyrite crystal measuring approximately 2.2 cm (0.9 inch) across is perched on the end of a marl matrix base.  Small contact area where another cube was attached but this detracts little.