Mimetites of this quality from the "Gem Pocket" are just simply IMPOSSIBLE to find...and this is a huge crystal! This was actually the miniature that Charlie Key himself kept, all those years (he sold Rob the collection in about 2010, partnered with Marshall Sussman at the time). These are considered by many to be the world's finest pocket of the species. The superb luster, great color, sharp edges, good clarity and size make for a fantastic, world-class Mimetite! This stout crystal is a full 4cm in length and 1cm in width and exhibits a distinct yellow color! Half of the crystal is truly gem (as in, you could cut a stone from it), especially the top quarter of the crystal at the termination, and then the bottom quarter of the crystal. The sides show additional gem areas in places and the front shows a cloudy yellow area near the middle with gem areas above and below. Depending on the crystal section, one can either see right through it such as at the termination or see through it to the dark matrix attachment area in the back. Crystal faces on the front and sides are super lustrous with only a trace of microchatter and there is a small contact at the upper-rear left near the perfect prismatic termination. The back shows where the crystal incorporated some Hematite-rich gossan material during growth, but it is freestanding. It would be hard to argue that this crystal is anything but exceptional. This is one of those "legendary pockets" like Jonas is for tourmaline or Pulsifer was for Apatite. ex Charlie Key collection, and a true treasure