A complex 9 cm crystal, stretching from the top to the bottom, makes this piece leap out at you since it is one of the largest crystals I have seen from Naica. The complex stairstep crystallography here is amazing to look at, and the green fluorite so translucent that you can really look deep into it. The stark contrast of the lustrous, jet black sphalerite between the two fluorite clusters makes the piece, and provides relief. It is MUCH MUCH better in person! This is one of the most visually dramatic "stairstep" Naica fluorites I have seen for overall size and the tons of color flashing out at you. Additionally it is completely pristine and free of damage all around front and sides, with only the bottom contact wher eit was removed. The back side is coated with a sparkly quartz druse that slightly overlaps to the top of the piece, wrapping around, as you can see in the upper-right image where the specimen is laid on the back with the top now coming out at the viewer.