Shirokovsky (pseudo-pallasite), meteorwrong of unknown origin (man made).  Not a meteorite, but strongly resembles a stony-iron space rock.  This full slice is approx. 40 grams and is less than 2mm thick.  It has some transparent crystals when held up to a bright light.  Most of the other non-metallic inclusions are opaque.  From the Galactic Stone Collection, not for sale.