A cluster of equant, gemmy, pastel green crystals of fluorite, to 2.4 cm across, are emplaced on a matrix of splendent, black crystals of sphalerite, to 1.0 cm across. For added effect, there is a crystal of gray galena, .75 cm across, nestled among the fluorite crystals. Minor chipping to some of the peripheral fluorite faces does not materially affect the overall quality but is present.
The color in the center of this cluster of gemmy fluorite crystals is pastel green while around the periphera it is the very lightest pastel lavender. All the fluorite crystals, which reach 2.6 cm across, appear to be cubes with modifying octahedral faces. Stepped growth is also clearly evident. Splendent, black sphalerite forms the matrix for this piece. This is a dramatic and very 3-D specimen with appeal from several angles of display, good all around!
Splendent, black sphalerite crystals, to 2.25 cm across, form a matrix on which is impaled a cluster of gemmy, pastel green and pastel lavender, fluorite crystals, to 2.5 cm across. The fluorite crystals exhibit stepped growth of cubes modified by octahedral faces. The 3 tiered specimen has very nice aesthetics, with the sparkle of the overlaying Quartz druse adding a lot to the overall impact. One of the more dramatic pieces, here, obviously!
This matrix specimen features several, gemmy, large bi-colored fluorite crystals. Thecore color is pastel green while the terminal faces are a pastel lavender. The largest crystal measures 5.0 cm across. The display face is pristine with just a few contacted edges on the periphery. Offsetting the fluorites, at the bottom of the specimen, are two splendent, black sphalerite crystals to 1.5 cm across. Does not get much more dramatic than this!
The sculptural quality and aesthetics of this specimen are exquisite - as is the quality. Add in size, and you have a MAJOR Naica fluorite here! Massive, black sphalerite is the matrix for gemmy, bi-colored, pastel green and pastel lavender fluorite crystals, to 4.5 cm across. Color is very rich for Naica. These are cubes with modifying octahedral faces. They also exhibit stepped growth. One incredible characteristic of this specimen is that the back side of the fluorite came off the pocket wall and was later rehealed with some growth over the contacted face there, making this technically a floater with no open attachment points. The combinations of all the factors listed above make this the finest specimen yet of this update.
An incredible LARGE specimen with bi-colored fluorite crystals, to 4.0 cm across perched on splendent, black sphalerite crystals to 1.5 cm . The fluorite crystals exhibit both pastel green and pastel lavender colors - and intense saturation as well. The crystals are SUPER GEMMY and transparent. The gemmier cubes are modified by octahedral faces. Only around the periphera is there even the smallest amount of contact. Overall, especially taking in teh size, this is an important and impactful specimen of significance for the locality and yet, compared to even the prices on relatively mediocre Chinese fluorite nowadays, these Mexican treasures just seem to be for some reason priced at a lower setpoint. I cannot say why, its just the way it is. One would think, as these are fewer and more rare, and historic for the locality, they'd cost more than a medium-level piece from a mine in china producing by the tonne. But, it just doesn't seem to hold. I ambasing these on cost, not wishes, sadly.
A beautiful combination piece! This has clusters of gemmy, bi-colored fluorite crystals, to 3.0 cm across, exhibiting both pastel green and pastel lavender hues. The crystals are cubes modified by octahedral faces. There are also two clusters of lustrous, black sphalerite to 3.5 cm across perched among the fluorite crystals. As an added effect, there is a thin drusy crust of white quartz draped over both the fluorite and sphalerite. All of this is underlain by a matrix of galena, sphalerite and pyrite. Overall a very visually impactful large specimen at a moderate price range, I thought.
The most exquisite miniature in the lot! This fantastic crystal is transparent and sharp as can be wished for, complete except for a small contact in the back. Aesthetically perched on a matrix of splendent, black sphalerite, are two equant, gemmy, pastel lavender fluorite crystals. The large one atop is about 3 cm across. The fluorite crystals are cubes modified by octahedral faces, classic for Naica.
Aesthetically perched high on bright, black sphalerite crystals to 1.7 cm across, is a 3.5 cm complex crystal of gemmy, pastel green fluorite. The fluorite crystals are cubes with modifying octahedral faces. Stark contrast and aesthetics make this one of my favorite specimens of all here. The crystallized matrix and isolation of the gem crystal atop contribute to making it a bit more of a premium specimen, in my book. Very nice!
One superb crystal of skeletal, battleship gray, galena, measuring 1.3 cm in length, is aesthetically perched on other galena crystals exhibiting various stages of etching. For added effect, scattered on the galena are several crystals of resinous, translucent yellow crystals of sphalerite to .6 cm across. The etching, and color contrast is super!
Sphalerites come in a wide variety of colors, but they are the most difficult to obtain in green gems. The Mogilata mine is one of the few mines in the world that is still producing good green gem quality Sphalerite. The stones are highly prized by collectors and dealers for having some of the finest green hue of any Sphalerite in the world. I’m told by my European friends that the top green Bulgarian gems sell for $400 per carat in Europe. They are becoming increasingly difficult to find these days and the best rough is already spoken for and the stones are presold before they’re even cut. This stone has superb green color for this mine, with only slight inclusions, and a lovely Eye of God cut. The stone was cut by Brett Kosnar, and is one of the best green Sphalerites we’ve had for sale from this locality.
Some of the best color Sphalerite in the world comes from Spain. A large percentage of the stones that come from Spain are on the warmer end of the spectrum, but rarely does one find a stone with a distinct green color like this from Santander. This stone has very good dispersion, color, size and excellent cutting. The color of the stone is a combination of green and yellow, and faces up to show a splendid array of color. This stone is amazingly clean for this material as it is very hard to obtain totally eye clean stones from this area. I would say the gem is very slightly included, but when you find a stone this color with this clarity, and in this size, it is a real treat. I have a hard time finding this color of Sphalerite from Spain, especially in this size. The cut on the stone is a Trillion Brilliant. Make sure to take advantage of this opportunity to own an attractive, good size, beautiful rare collector stone.
ex. Richard Heck
This combo specimen has a style and 3-dimensionality that make it unique! A druse of brassy yellow pyrite highlights splendent, black sphalerite crystals, to 1.5 cm across and superb rhombohedrons of frosted, lustrous and translucent, ivory colored calcite to 3.5 cm across. The way the calcites climb this specimen and surmount it is aesthetic and exceptional. Interestingly, the pyrites are , on close inspection, pseudomorphs after pyrrhotite and retain the bladed habit of the previous species. The calcite fluoresces a rich reddish-orange color due to manganese content, as a bonus. A wonderful example of sufides and carbonates!
ex. Richard Heck
Nestled atop a curving vug of sulfides is a superb, lustrous and translucent, complex fluorite crystal measuring 4 cm across. Thep astel green crystal is associated with lustrous, black sphalerite crystals to 1 cm across. A druse of tan colored calcite partially coats one face of the fluorite crystal on the backside but it is actually freestanding and complete, all around. The fluorite fluoresces a deep purple and the calcite fluorescence is a terra cotta color. This is a classic Naica fluorite of old style, with stepped faces. The colors are subtle and hard to capture accurately on these -in person, it is more a pastel green
ex. Richard Heck
Sharp, relatively large bournonite crystals for this locale are perched on lustrous black sphalerite crystals, associated with a druse of,sparkling, brassy yellow pyrite and minor drusy, white quartz. A few of the bournonite crystals are also doubly terminated. They are sharp and shwo the striations characteristic of this locale - once one of the world's great sources for this species
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