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Mineral Specimens with Quartz
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13.1 x 7.5 x 7.1 cm. To start, the quality of these quartz crystals is just fabulous. The large, fat crystal is perfectly symmetrical, sharp as a razor and clear as glass. Near is termination is intergrown a more slender, DOUBLY-TERMINATED crystal. The beautiful inclusions that make this specimen so interesting are a reddish chlorite (with a bit of green chlorite as well) and, here and there, some clay. The way these crystals sit up naturally on the underside contact face is a piece of luck - very aesthetic!
6.9 x 6.4 x 3.9 cm. From China, a cluster of quartz crystals with inclusions of hematite that give them this distinctive rusty-red color.
7.1 x 5.4 x 4.1 cm. A gorgeous Eastern European galena specimen, with beautifully articulated modified octahedral crystals that have a wonderful mirror-metallic luster. They sit up beautifully on the matrix, making this a truly aesthetic specimen. The galenas measure to just under 3 cm.
16.9 x 9.4 x 6.4 cm. A large and spectacular Kenyan quartz crystal! It has Brandberg-like qualities in the isolation of the intense blush of purple color in the interior, and Brazilian qualities in the "elestial" style sub-crystal growth and skeletal growth anomalies. There is some smoky color here complementing the purple amethystine tones. There is a natural contact face on the back of the top of the crystal (as it is shown in the photo), and a small area of contact on the back of the bottom side. That is natural etching at the upper termination, not damage! A super-impressive locality quartz specimen.
6.5 x 1.7 x 1.4 cm. A gemmy, doubly-terminated Brandberg amethyst, with an incredibly intense blush of purple color isolated in the clear interior. It has a complex, multiple termination at one end - the actual "final" termination jutting out of what looks to "almost" have been the final one. There are some small, gemmy crystals sticking out of this end. Fine luster, an all-around really pretty crystal. Ex. Charlie Key collection.
9.8 x 6.9 x 4.1 cm. Here is real rarity out of the collection of Ed David, a true prize for a quartz collector as a really unique quartz. For one thing - have you ever seen a large quartz with the rare ROSE hue AND smoky? Well this one has it! you have this extremely large anchor smoky crystal, with big, smooth, flat faces, that forms the "center" of the specimen, with the smaller crystals forming a sort of garland around it. It is complete all the way around, too. It is just a striking piece for the color contrast but more than that, it’s world class as a quartz.
These beautiful specimens are rare survivors of a small find that produced GREAT carving rough for cabochons and jewelry made of chalcedony (its gemmy and transparent/translucent!), to the detriment of the original specimens from our point of view! Charlie saved some from the wrecker, though, and these are a few selected from a flat we have of this rare and beautiful old material from the 1980s. This one is particularly nice because it shows the lace agate in layers around the chalcedony, that provided the silica for replacement of the fluorite crystals that were originally inside this vug. In other words, this piece preserves the full geological context of the pocket, with crystals in a vug in the ground, changing over timeto another mineral due to alterations in the chemistry and environment. Besides, its beautiful, too! 18.3 x 10.2 x 3.4 cm
These beautiful specimens are rare survivors of a small find that produced GREAT carving rough for cabochons and jewelry made of chalcedony (its gemmy and transparent/translucent!), to the detriment of the original specimens from our point of view! Charlie saved some from the wrecker, though, and these are a few selected from a flat we have of this rare and beautiful old material from the 1980s. This one is particularly nice because it is a good-sized plate with excellent translucency and good horizons abou the edge. IN person, you'd displayit set down a bit, to better show off the crystals! 7.3 x 3.9 x 3.0 cm
This is a very intricate combinaiton piece featuring rich drapery of bushlike copper crystals, with a nice reddish patina, overtopping GEMMY, brilliantly lustrous rhombohedral clacites that are colored by red chalcotrichite inclusions; and the calcite itself grows over brilliantly lustrous small quartzes with hematite or iron red inclusions. All are classic for this locality, but I cannot recall seeing it all together in one specimen like this! 8 x 7 x 4 cm
A really neat locality piece with an approximately 8mm amber-colored, gorgeous sphaerlite crystal completely enclosed within the tip of this undamaged quartz point! 7.1 x 2.8 x 1.7 cm
12.2 x 8.4 x 6.9 cm. Over a dozen wonderful, sharp crystals with gemmy purple tips, to 2 cm, stick up in the center of the matrix on this large, beautiful Vera Cruz specimen. The isolation of the crystals adds to the appeal. The distinctive gemminess and isolation of the color in these crystals are what make Vera Cruz amethysts so prized. Ex. William Hiss collection.
14.5 x 4.9 x 3.9 cm. Sure, this is "just" a quartz crystal, but it is clear from looking at it why Marty Zinn had it in his collection. What makes it special is the overall impact: that the back of the crystal is covered with orange dolomite crystals, which wrap around the front stopping at exactly the right point to create a "frame" for the quartz crystal! The quartz itself is gemmy and perfectly euhedral, and there are some interesting sulfide inclusions at the bottom. What a striking quartz specimen, and from a great old locality!
15.5 x 8.9 x 3.5 cm. A large, strikingly sculptural, sharply crystallized specimen of natural Michigan copper. You can still see come of the quartz crystals it intergrew with, adding to the attractiveness. There are sharp, angular faces everywhere here - and the piece has a gorgeous "antique" patina to it.
7.4 x 3.5 x 3.1 cm. This is a pretty grouping of quartz crystals, in fine condition, from the Ouray area of Colorado. The cluster is a FLOATER, with terminations complete at both the top and the bottom - making it really unique! If you look closely in person, you will notice just a bit of an amethystine glow in the center of the largest two crystals.
7.5 x 7.4 x 6.2 cm. Look how dramatic this razor-sharp Brandberg amethyst crystal perched isolated on the edge of this matrix! It has the characteristics that make these so prized: super clarity, glassy luster and isolated blushes of purple inside (rather than a ubiquitous purple as with amethyst from more common localities. Most of these are not on matrix, so nicely balanced matrix specimens such as this one are particularly desirable. The amethyst crystal measures 3.5 cm.
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Rob Lavinsky, rob@irocks.com
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