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Mineral Specimens with Calcite
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9.5 x 6 x 5.5 cm. This is an exceptional specimen just covered with light blue-white 1 cm blades of Calcite intergrown with spheres of honey-colored Stellerite. The largest sphere measures a whopping 3 cm across, and the crystals have great luster and are gemmy. What really add to the overall aesthetics are the small crystals of Stellarite that wind their way across the matrix, leading to the large cluster. Very attractive and dramatic. This locality has produced among the world’s best stellerite specimens and certainly the prettiest. This piece just sparkles and glows in person.
8 x 7 x 4 cm. A rich coating of lustrous deep rose-colored Cobaltoan Dolomite on dolomite.
18.5 x 9.3 x 5 cm. Large plate of the now classic red hematite-included Fluorite balls from Mahodari, India. These balls are about 1.5 cm across, and have a dusting of tiny doubly-terminated Calcites. Also, the Fluorites encase a pair of large Calcite rhombs.
5 x 4.1 x 2.3 cm. Choice Ruby specimen from the Chumar Mine of the eastern Himalayas. Many of the finest Ruby specimens from here have shown good long prismatic development of the crystals, and this is no exception. The main crystal is upwards of 3 cm long, partially terminated, and contacted in the back, has traces of the shocking pink color that these rubies are famous for.
7.1 x 7 x 3.5 cm. A very appealing specimen of Manganoan calcite. The crystals have grown in seven rounded clusters, but the crystal faces remain distinctive along the surface, allowing you to appreciate the good luster and sparkle that it creates.
7.8 x 5 x 3.8 cm. Super-desirable PINK cobaltoan calcite! The crystals here are super-fine: large, deep pink color, and in great condition. They are uniformly sharp and tall, mostly around 0.75 cm in height. Unusually sparkly with glistening second growth atop!
12.7 x 11.7 x 7.8 cm. A big fluorite, over 6 cm along the edge, intergrown with a smaller crystal, on a bed of spiky, frosty calcite. The fluorites have the classic golden center, surrounded by transparent light teal blue. This specimen was mined at the Denton Mine in 1981, and came out of the collection of Tom Wiesner.
7.7 x 6.1 x 2.7 cm. A group of acicular crystals of primary malachite against the backdrop of a bright pink druse of cobaltoan calcite.
22.2 x 14.1 x 9.6 cm. These crystals are unusually transparent for the find, so you can very clearly see the phantoms inside. They also have top glassy luster. These Leiping calcites are distinctive for their pretty, razor-sharp, symmetrical pyramidal terminations as well. Just a super-impressive calcite specimen from a finished find.
17.4 x 11.2 x 9.7 cm. A dazzling large specimen from a find at the end of last year in China! These "pagoda" calcites look like stacks of progressively smaller flat plates. Each stack consists of intergrown, flattened pyramidal crystals (a modification of the rhombohedral form). They form beautiful 3-D towers. The luster is superb, and the color is a really pretty pastel pink.
28.5 x 23.4 x 9.1 cm. This spectacular showpiece was probably trimmed from the inside of a giant geode, and considered more valuable as a large cabinet specimen than as a huge geode. It features an 11-inch band of fabulous calcite crystals, to 4.5 cm in height, bursting in all directions and running right through the middle of this large plate of very gemmy, razor-sharp and glass-lustered amethyst crystals.
8.9 x 6.2 x 4.7 cm. What a beautiful and unique Eastern European specimen! On a bed of quartz crystals is a cluster of elongated quartz prisms that have been pseudomorphed by sparkling microcrystals of calcite.
8.4 x 7.0 x 5.6 cm. Pink cobaltoan calcites are quite uncommon in large crystals, but the past year has seen a batch of gorgeous specimens come out, and we have cherry-picked as many as we could get our hands on that were affordable while they are available. These crystals (to 0.6 cm) have wonderful brightness and luster, and saturated deep pink color.
11.4 x 9.7 x 8.1 cm. A spectacular calcite from an amazing find in Nantan (also known as Nandan), China (weirdly enough, the same locality as the meteorite in this set of auctions). The three "towers" of stacked, intergrown flat crystals are outlined around the sides by an unidentified microcrystalline mineral that fortuitously adhered to the crystal edges, making what would have been a beautiful specimen into a true jaw-dropper.
4.1 x 3.6 x 3.2 cm. These calcite twins from China to me represent one of the most important calcite finds of the past 15 years, and certainly one of the most significant Chinese finds overall. This gem provides a perfect example of why: exquisite symmetry, gemminess, and striking appearance as it sits on a bed of hematite-colored quartz crystals. This fine twin measures 1.8 cm across.
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Rob Lavinsky, rob@irocks.com
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