Pyrite cube crystals from Navajun, Spain.
As you can see in the photos, the pyrite crystals have a mirror-like luster.
These specimens have cubes growing out of other cubes. The result is quite spectacular!
The specimens weigh between 65-90g and the larger cubes measure about an inch with smaller cues growing within.
See the photos for the approximate measurements as well as various faces.
NOTE: in some case, the specimen has been professionally repaired. During the mining and cleaning process, the cubes sometimes separate. This is normal and accepted for this types of specimens. The prices reflect these aesthetics.