Pyrite

This is an awesome piece of pyrite from the now defunct US locality, Duff Quarry.  This locality always produces specimens that have multiple different pyrite crystallizations in the same piece.  Octahedral, pyritohedral, and others are likely to be found on this piece alone.  There is also a slight tinge of iridescence on the piece, with excellent luster and color.  The dual cavities side-by-side are also quite striking and unique.  Don't let this rare on slip away!  From Duff Quarry, Ohio.  Mined over 10 years ago, acquired at the Detroit show, 2023. This piece is self standing.
 
Pyrite, often referred to as "fool's gold" due to its striking resemblance to real gold, is a popular mineral among collectors.  It commonly forms in cubic crystals, though it can also manifest in octahedral and pyritohedral forms.  Well-formed cubic pyrite crystals are particularly prized by collectors for their geometric perfection.  It has a metallic luster and a pale brass-yellow hue, which can sometimes exhibit a slightly greenish tint. Its reflective, shiny surface makes it visually appealing and easily distinguishable.  Overall, pyrite's aesthetic appeal, variety of forms, and widespread availability make it a fascinating and rewarding mineral for collectors of all levels.