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ex. Ernie Schlichter
With the great Tsumeb mine now history, specimens of this quality are hard to come by. These deep, emerald green dioptase crystals, to a whopping 2 cm in length on the largest, completely cover the whole specimen with glistening color. In addition, they are fairly gemmy for the species and have vibrant luster. Just a great piece! For the price range, especially, i do not think i could replace this with one of similar quality without stepping to the 4-5k price tier. NO DAMAGE to the display face. Lastly, the piece photos better horizontally but really can be stood vertically for maximal display, with the larger crystal then centered on the top half of the specimen.
ex. James and Marjorie Ferguson
A killer toenail featuring a 2.25 x 1 x 1 cm dioptase crystal perched atop a natural pedestal. No damage, this is pristine! The aesthetics are incredible. Would trim slightly to a full thumbnail, as well...
ex. James and Marjorie Ferguson
A beautiful specimen of dioptase of TOP quality, emerald-green with high lustre and some translucency, wreathed around a calcite matrix! Sharp crystals, some doubly-terminated, to 9 mm.
ex. James and Marjorie Ferguson
A gorgeous miniature dioptas,e that doesn't break the bank: this specimen features a main crystal 1.7 cm long and 1 cm thick! It has TOP color, lustre, and is just much better in person than it appears, as with all dioptase in photos.
ex. James and Marjorie Ferguson
Simply a killer thumbnail. THIS IS A GEM CRYSTAL! 1.4 x 0.9 x 0.9 cm
ex. James and Marjorie Ferguson
A very cute toenail-sized specimen featuring a perfect, sharp, gemmy, lustrous dioptase perched atop a complete calcite rhomb! Stunning contrast!
ex. James and Marjorie Ferguson
An unusual association for the mine, with malachite druse on top of dioptase! The color is phenomenal on the diop and the association with velvety light green malachite serves to enhance and contrast the darker, emerald-green dioptase! The diop crystals are to 1 cm and this is a rich, solid cluster of dioptase: quite a bit of it for the price, I think.
A large plate of dazzling green crystals of dioptase, certainly one of the top favorites of worldwide collectors, from Congo. It is a good thing there is a trickle of specimens still coming from Congo, because Tsumeb dioptase has become incredibly expensive – partly due to that Tsumeb "aura". A specimen such as this from Tsumeb, of comparable quality, would cost roughly twice the price, even though a lot more Tsumeb dioptase has come out than has ever come from Congo – so it is certainly not about rarity. The crystals here measure to around 0.5 cm and are highly lustrous. In this price and size range combination, you get a LOT MORE for your money from this contemporary locality than if you purchased a Tsumeb piece, where you pay for the premium of a historic locality. The matrix has a pleasing concave structure to it, so the specimen is nicely 3-dimensional rather than being a flat plate.
ex. Harold Urish
Dioptase from Morenci is a thing of rarity, and seldom do you see any large plates of quality. This is an extremely rare and fine example, with large crystals for the locale and rich coverage. It is an important example of dioptase from a US locale, and many people aren't even aware they exist as they are just so hard to come by. Collected in the 1980s, and ex Harold Urish collection
ex. Harold Urish
An extremely rare dioptase from the RAY MINE. Most people who see Arizona dioptase only see it from Morenci - this one was a big surprise to me and I doubted it until it was verified by an Arizona collector expert. The matrix is lighter weight than Morenci material, and the chrysocolla association is also distinct here. The dioptase here, though small in crystal size, has an incredible bright itensity and the crystals sparkle like sugar! It is a very beautiful, and rare, large specimen
ex. Harold Urish
Dioptase from Morenci is a thing of rarity, and seldom do you see any large plates of quality. This is an extremely rare and fine example, with a solidly covered display face AND a pocket in the side that are completely filled with large crystals for the locale, and extremely rich coverage. The top surface features sharp little dioptaes against a sparkling druse of quartz, for contrast. Unusual! It is an important example of dioptase from a US locale, and many people aren't even aware they exist as they are just so hard to come by. Collected in the 1980s, and ex Harold Urish collection . MUCH BETTER IN PERSON!
ex. Ron Pellar
Like many of Ron's top pieces, he found just a smashing example of a relatively common species and sat on it for 20-30 years or more. While dioptase thumbnails are common enough, this piece just has a perfect balance and a sharpness to it, that few have. The dioptase crystal is 1.9 cm from tip to tip, and sits perfectly on a well-balanced matrix, showing all terminations. It is RAZOR sharp. I first saw this on exhibit in the Pellar collection competitive cases when I lived in California in the early 1990s. It is complete all around, and is more than just a "small example", transcending to be superb thumbnail way beyond the norm for a relatively common species. Purchased by thumbnail collector Ron Pellar in 1984, right at the height of the dioptase production from Tsumeb, he picked this and kept it since. At the time he bought it, the price paid was probably a near record for a thumbnail from this find, as much was coming out for 2 years, and smaller pieces were often sold inexpensively. But this is one of the great ones! Joe Budd photos.
ex. Jack Halpern
This is a visually impressive ballbuster of a dioptase plate, of good size too! It has numerous crysatls to 1.3 cm in trade and dozens smaller. All are peched on the best matrix of contrasting, sparkly white calcite. There is some damage here and there, though mostly to the back periphery and back of a few crystals on that part of the specimen...nevertheless it displays very well adn the damage is not apparent at first glance. If not damaged evern just that small bit, this would easily be a 10k-plus specimen. Still, its worth $4000-5000 easily , I would think. It is cheap, bluntly, because I am blowing it out to help cash out on the trade I made with Jack. I paid $4500 in trade for it.
I absolutely love this specimen of dioptase, for several reasons. First, the overall form – the crystals are piled up on two knobs of stark white calcite – so it is much more 3-dimensional than your average specimen. The crystals have the best "Tsumeb-green" color and glassy luster. And the specimen can be displayed from virtually any direction – you can see we have shot it from both sides. Complete save only one damaged little crystal on a side. Really good Tsumeb dioptases are, of course, amongst the most prized specimen in mineral collecting, for their spectacular beauty, and they just get harder and harder to find.
ex. Charlie Key
One of the finest Kaokoveld dioptase specimens I have seen, with a quality of lustre and color equivalent to Tsumeb dioptase, and an aesthetic arrangement uncommon from this location in larger diops (which tend to be boring flattish plates more than 3-D agregates as this one. The contrasting blue chrysocolla accent is a wonderful finishing touch. This piece just radiates color and shows like its worth 10k...well, the simple fact of the matter is that the Kaok material simply goes for about 1/3 what a same-sized Tsumeb specimen of similar quality would go for. There is simply more premium put on the Tsumeb material, much of which came out in the 1970s, compared to teh Kaok material which has come out since the mid 1980s. I do not think this pricing difference to be entirely warranted, but it exists and I feel that I must price this one accordingly even though I do truly feel its a 10k piece if only from a locality only a few hundred klicks away. For that matter, it really IS a superb piece for this locality, of which there are few equals - and hence of a higher stature relative to Kaok dioptase specimens found than to Tsumeb pieces of which there are admittedly better and bigger (and much pricier) specimens out there. The chrysocolla association is unique to this localiy and is not found at Tsumeb.
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