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Mineral Specimens with Quartz
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5.4 x 4.4 x 3.6 cm. A beautiful combo specimen of gemmy quartz crystals, a couple of them doubly-terminated, with a round cluster of translucent prehnite of a gorgeous light mint green. The two minerals complement one another beautifully on this specimen! Good prehnites are common now from Mali and to some extent from New Jersey, but NOT from China!
9.6 x 5.9 x 3.3 cm. Indian amethyst, which is of course far rarer than from the more well-known amethyst localities such as Brazil, Brandberg and Bolivia, has this incredibly intense gemminess about it. It is also usually found in isolated clusters on this dark matrix, in this case with little milky calcites, which makes the crystals really jump out at you as they do not in specimens from other localities where they are massed together wall-to-wall with no isolation. These beautiful crystals are arranged in a band right up the middle of the matrix.
4.8 x 4.5 x 3.8 cm. This is NOT your run-of-the-mill Chinese fluorite specimen! It is a complete crystal, with no contacts or damage, sitting on an incredibly well-trimmed matrix with accenting gemmy quartz crystals and pyrite. The fluorite measures just under 4 cm across the edge, so it is quite sizeable. But more importantly, it is super-gemmy, a beautiful light teal color, with an intense, sharp purple phantom inside!
9.5 x 5.7 x 5.0 cm. Super sharp and gemmy crystals of amethyst to 1.5 cm, aesthetically arranged on a sloping matrix. The clarity and glassiness of these crystals shows why Las Vigas amethysts are sought-after!
12.4 x 6.4 x 5.1 cm. An extremely unusual combo specimen from Kazakhstan, of good size! This fascinating piece is a free-standing intergrowth of purple and gray fluorite octahedrons with quartz crystals, both conventional in form and tabular. Pyrite here and there adds a sparkly golden accent that does not come through very well in the pics. Fluorite octahedrons alone from Kazakhstan are exceptional, and this sculptural piece with quartz is rare indeed. Ex. Ed David Collection.
5.6 x 2.1 x 1.5 cm. A very unusual specimen from South Dakota for the quartz collector, and pretty too! This is a water-clear and gemmy quartz crystal included with and wrapped by a garland of iridescent pyrite flashing red and purple hues. Ex. Tom Campbell collection.
5.9 x 4.7 x 3.2 cm. Rose quartz is the rarest and most sought-after variety. This is a crystal of colorless quartz that is surrounded by crystals of beautiful pastel-pink rose quartz! The resulting form is therefore very unusual and aesthetic, as you can see, and it is accentuated by the fact by the contrasting white matrix of massive quartz and albite.
7.9 x 4.9 x 3.2 cm. An exquisite and sculptural cluster of GEMMY, doubly-terminated amethyst crystals from the famous Guerrero locality. These crystals show the best glowing, intense purple colors that make these amethysts so prized. It is very uncommon to see a delicate, matrix-free specimen in this size rang, so this is really a desirable specimen in every way!
8.8 x 8.6 x 4.8 cm. A very unusual specimen of sparkly quartz which has pseudomorphed the underlying calcite crystals! Some little orangey calcites have been lifted up and carried with the top of the crystals as they grew and are now sideways on the tips of the quartz-covered calcites. This is very unusual stuff for the locality, and certainly very pretty too!
11.8 x 10.2 x 7.4 cm. A large cluster of amethyst crystals, sparkling with a second generation of small crystals all over the underlying large ones. This is a truly sculptural specimen; as you can see, the crystals could hardly be arranged more beautifully. And, they have just a hint of hematite staining that gives them this pretty variegated hue. The crystals here measure to 7.5 cm in length!
22.6 x 10.9 x 3.9 cm. This quartz crystal is so spectacular in person you just will not believe it. It is for all practical purposes a complete floater, with just one contact along the edge. It is a flat, tabular crystal, and the entire display face is this impossibly geometric, stepped series of plateaus, making the crystal look more like a work of cut glass than a natural phenomenon! The transparency is terrific, and the luster is fine and glassy. There are faces all over the specimen, including the edges - the crystal really is complete!
7.2 x 6.1 x 3.6 cm. Gorgeous cluster of GEM Chrysocolla ranging up to almost 1 cm in breadth. The color is superb, and the luster equally so due to the sparkling drusy quartz coating.
8.3 x 5 x 3.5 cm. Fluorite balls from India, both golden and red, have been justifiably famous for years now. However, up until we received the Key collection last year, very few people knew that PURPLE Fluorite balls even existed from Mahodari. Sitting in a bed of quartz crystals on agate, this is really quite attractive in its own right.
8 x 5 x 3 cm. Definitely one of the finer specimens of the unusual and striking Blue Quartz from the famous locality in Spain. These modified crystals have good crystal development for the variety. Here, the best-developed crystal (.4 cm on edge) has a modified termination that almost looks dipyramidal, and the luster is superb. The blue color is caused by fibrous inclusions of Magnesioriebeckite.
8 x 7.5 x 7 cm. Outrageously good old-timer from one of the more famous Hubnerite localities in the world. The Hubnerites here range up to 7 cm, are jet-black, are nicely terminated, and have just a superb luster, particularly on the opposite (front and back) faces. The elongated blades are coated with many sharp gemmy Quartz crystals that range up to 2 cm. A exemplary classic.
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Rob Lavinsky, rob@irocks.com
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