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1282 specimens found
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Andradite var. Demantoid, Gem crystals with color change
stock #17.1-006
Antetezambato, Maherivaratra, Ambanja District
Antsiranana Province, Madagascar
6.5 x 4.9 x 3.1 CM (cabinet)
price: $900
Spring 2017

Top color and luster, bright sparkling gem Garnets are perched on a contrasting matrix of micro Garnets from white to pale green. In perfect condition damage wise, this is far better in person as the crystals are more brilliant than can be photographed. The color change from daylight to incandescent is also quite striking, daylight (or good led lighting) brings out an intense apple green as seen, the last photo shows the color by incandescent lighting. We searched out and examined a lot of the best Demantoids from Madagascar and only a few we consider great values. This is one that stands out.
Calcite with Aragonite- classic locale
stock #16.1-1275
Southwest Mine, Bisbee, Warren District, Mule Mts, Cochise Co.
Arizona, United States
8.8 x 4.9 x 4.8 CM (cabinet)
price: $225
Spring 2017

A choice Bisbee specimen with delicate needle crystals of acicular Aragonite perched on balls of Calcite. From the Southwest mine, this area intersected many voids formed by slumping of oxidized sulphide ore. These voids allowed many secondary Carbonate minerals to form in esthetic growths. As the mining entered these voids some fine specimens were saved. In perfect condition and with good luster.
Fluorite on Quartz
stock #15.1-1010-SM0
De'an Mine
Jiangxi, China
5.9 x 4.8 x 3.3 CM (small cabinet/large miniature)
price: $330
Spring 2014

A super sharp, well exposed and choice Fluorite on Quartz matrix. The main octahedral crystal is 2.6 CM across the axis and contrast nicely with the matrix. An older piece from the first wave of specimens produced at Dean mine, this was in the Charles Noll collection. These were exposed by dissolving the enclosing Quartz with hydrofluoric acid, and tricky and dangerous task. This one is especially esthetic and has some zoning. No damage, the Fluorite looks really fine from all angles. Although a lot of these did come out in the 2005-7 era, this quality was never very common.
Sheelite with Fluorapatite on Muscovite.
stock #Alec 15-167
Mt. Xuebaoding, Pingwu Co., Mianyang Pref.
Sichuan, China
8.3 x 5 x 3.4 CM (cabinet)
price: $720
Spring 2017

A really nice combination specimen, with typical Xuebaoding matrix of Muscovite that hosts several yellow-orange Scheelite crystals and a single pink Fluorapatite. The apatite is well exposed and mostly transparent. The matrix was sawn on the back to remove it from the cleft. In good condition, there are very small chips on some Scheelites and the Apatite has a contact on the backside. Fine luster and better in person. Formerly in the Shields Flynn collection of Chinese minerals, vintage 2004 and obtained from Bert Ottens, this type of combo is no longer found. A modern classic.
Fluorapatite on Beryl V. Aquamarine
stock #16.1-167
Alchuri, Shigar Valley, Skardu District, Baltistan
Gilgit-Baltistan, Pakistan
4 x 2.7 x 1.9 CM (miniature)
price: $280
Spring 2017

A fascinating miniature specimen, both unusual and pretty. A 3.2 CM tall well formed Apatite crystal is joined by two gem clear Aquamarine crystals. Both Aquas have some unknown inclusions of brown hairlike crystals and negative crystal forms inside. The Apatite has some inclusions too but less visible as it is milky and mostly opaque. A very nice arrangement and no matrix at all. The condition is very good overall, there are very small contacts on the Aquas and the bottoms of the crystals are incomplete, but the terminations are fine. A very nice association specimen.
Carrollite with Calcite
stock #A-19-257
Kamoya, Kambove, Katanga Copper Crescent
Katanga (Shaba), Democratic Republic of Congo (Zaire)
4.7 x 3.1 x 3.2 CM (miniature)
price: $190
Spring 2017

Carrollite with very bright metallic luster on a nice miniature specimen. There have been no new finds of Carrollite for a few years now, but for a time the Kambove mine was a prolific source for the best specimens ever found. This bright miniature has sharp crystals to 1.3 CM size, there are some contacts and bruises seen on some angles but they are relatively small. More perfect, larger specimens are now trading for many thousands, this piece is a lot more modest but still has top luster and nice form. An affordable alternative that looks much better than the mine run.
Beryl Var. Emerald- Trapiche form cabochon
stock #16.1-1268
Muzo Mine
Boyaca, Colombia
1.4 x 1.1 x .4 CM (thumbnail)
price: $725
Spring 2017

A choice example of a Trapiche Emerald with the rare and very desirable transparent hexagonal center form. Cut from sections of the Emerald crystal with the C axis in the middle these are unique to this area in Colombia, and present a remarkable natural six-armed structure. Far above average for rich green color, the transparency is also first rate. Weight at 5.5 Carats, this grade would usually be priced from 300-400 plus per carat when available. From a small private collection of trapiches, this is from finds several years ago.
Vesuvianite -textbook crystals on matrix
stock #Alec 19-252
Sierra de la Cruz, Municipio de Sierra Mojada
Coahuila, Mexico
8.7 x 4.4 x 4.1 CM (cabinet)
price: $110
Spring 2017

These Vesuvianites are nearly all equant, doubly terminated with a textbook form. Well exposed by etching from contrasting white matrix these are a pleasing golden hue with lustrous surfaces. Back in the 70s these were all labeled Lago de Jaco, but now the correct locale is known to be Sierra de Las Cruz. Most crystals are quite perfect but several have cracked and rehealed or have cracked and split apart while inside the matrix. A good example with many small crystals up to 8MM.
1282 specimens found
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | 156 | 157 | 158 | 159 | 160 | 161 |