This specimen is from the famous "Gem Pocket" of mimetite found in 1971 and not surpassed since by any mimetite from any location, according to most people who score such things (though China is giving them a good run). As you can imagine, they are highly desirable and hard to obtain after some 30 years. Just a handful are for sale in any given time, now. This specimen is among the largest crystals that would have been found at the time, certainly among the stoutest in girth. I am told there were only a dozen or so crystals of this caliber or better. Most surviving Gem Pocket specimens are small pieces with small crystals (some of you have probably seen several 20k-plus small mini's that were half the size of this one and no better in quality floating around at certain shows). THIS piece is the single largest gem pocket crystal that I have seen on the market, personally, or even heard about.I think this price is eminently reasonable for a specimen of this quality and size, compared to what the more dinky ones already go for, and I bought the collection in large part because it has this incredible mim which I regard as a "quick sell." MORE GEMMY In PERSON, PLEASE NOTE!