From: Victoria Mine, La Rioja, NavajÃƒÆ’Ã‚Âºn, Spain
Size: 8.5 x 8.0 x 5.5cm
Wow! There are a total of 12 pyrite cubes in this amazing pyrite cluster plus another 3 tiny cubes, so technically there are 15 cube crystals on this! The largest cube measures 3.2cm on its longest edge. Overall condition is quite good with sharp edges and corners on most of it, and mirror-like faces.
These Spanish pyrites are some of the world's most amazing mineral specimens, and people often think they are man-made. But these perfect cubes are completely natural and grow like this all on their own. They're made of iron and sulphur, and the world's best pyrites come from Spain, specifically, the Victoria Mine in Navajun. When these come out of the ground they are very fragile, and as part of the normal cleaning process they detach the cubes, clean them, and then put them back together as they were originally, but now much stronger.