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LL737 - Tourmaline $ 350 Himalaya Mine, Mesa Grande, San Diego Co., California, USA miniature - 3.8 x 0.8 x 0.7 cm ![]() ![]() ![]() ![]() Transparent pink Tourmaline crystal. Well terminated and free of any internal fracturing. Weighs 4.85 grams. Ex. Bryant Harris collection and mined in 1969.
LL738 - Benitoite $ 450 Gem Mine, San Benito Co., California, USA thumbnail - 2 x 1.8 x 1.3 cm ![]() ![]() ![]() ![]() Single Benitoite with 'textbook' form. Benitoite is the only mineral that crystallizes in the trigonal bipyramidal form, a form that was only hypothesized prior to it's discovery. Here you have a perfect example of the rare form (and a rare mineral). It looks almost like a crystal model. Thick and complete all around, with Crossite inclusions.
LL739 - Benitoite $ 250 Gem Mine, San Benito Co., California, USA thumbnail - 1.4 x 1.3 x 0.6 cm ![]() ![]() ![]() ![]() Single Benitoite with near 'textbook' form and Crossite inclusions. Benitoite is the only mineral that crystallizes in the trigonal bipyramidal form, a form that was only hypothesized prior to it's discovery. Here you have a perfect example of the rare form (and a rare mineral). There is one natural step growth on the back of one corner, otherwise is perfectly symetrical on both sides.
LL743 - Adamite $ 150 Mina Ojuela, Mapimi, Durango, Mexico thumbnail - 2.6 x 2 x 2 cm ![]() ![]() ![]() ![]() ![]() Two interconnected 'pinwheel' clusters of yellow Adamite. Undamaged.
LL744 - Topaz $ 150 Ouro Preto, Minas Gerais, Brazil thumbnail - 2.3 x 1.2 x 0.9 cm ![]() ![]() ![]() Complete and well terminated single crystal of 'Imperial' Topaz. This specimen has a well saturated, better than average, deep reddish orange coloration.
LL747 - Apatite with Tourmaline $ 200 Galilea, Minas Gerais, Brazil thumbnail - 2.1 x 1.6 x 1.6 cm ![]() ![]() ![]() ![]() Translucent purple Apatite crystal with and transparent section of green Tourmaline. The Apatite crystal is 2cm in size and has a slightly curved top surface and has a small Tourmaline crystal included inside.
LL748 - 'Cat's-Eye' Tourmaline $ 120 Gilgit, Skardu, Pakistan thumbnail - 2.5 x 2 x 1.7 cm ![]() ![]() ![]() ![]() Terminated 2.1cm Tourmaline crystal with attached Muscovite. The upper half of the crystal is a chatoyant greenish white and the bottom half is opaque. Undamaged.
LL727 - Gahnite rough and cut $ 350 Kagoro, Kaduna State, Nigeria thumbnail - 0.6 x 0.6 x 0.6 cm ![]() ![]() ![]() Rough and cut set of transparent blue Gahnite. Gahnite is the zinc rich end member and one of the rarer species in the Spinel group of minerals. The crystal is a complete octahedron with one tiny chip on one tip, otherwise perfect and translucent to transparent internally. The gemstone is 4mm wide. These were first discovered in 2001 and are found mostly of industrial quality. Though they don't get very large, the color is spectacular. The GIA has written a nice article about these crystals published in Gems & Gemology, Fall 2019, Vol. 55, No. 3.
LL730 - Gahnite rough and cut $ 350 Kagoro, Kaduna State, Nigeria thumbnail - 0.6 x 0.6 x 0.6 cm ![]() ![]() ![]() Rough and cut set of transparent blue Gahnite. Gahnite is the zinc rich end member and one of the rarer species in the Spinel group of minerals. The crystal is a complete octahedron with one tiny chip on one tip, otherwise perfect and translucent to transparent internally. The gemstone is 4.5mm wide. These were first discovered in 2001 and are found mostly of industrial quality. Though they don't get very large, the color is spectacular. The GIA has written a nice article about these crystals published in Gems & Gemology, Fall 2019, Vol. 55, No. 3.
LL735 - Bournonite with Sphalerite $ 375 Pachapaqui mining district, Bolognesi Province, Áncash, Peru large cabinet - 17 x 13 x 6 cm ![]() ![]() ![]() ![]() ![]() Large specimen of interlocking and individual 'cogwheels' of Bournonite associated with black Sphalerite crystals and minor amounts of Pyrite and Quartz crystals. A very rich sample loaded with Bournonite. Ex. Chuck Trantham collection.
LL811 - Cuprian Adamite $ 900 Mina Ojuela, Mapimi, Durango, Mexico miniature - 4.5 x 4 x 3.5 cm ![]() ![]() ![]() ![]() Limonite vug filled with colorless Calcite and green Cuprian Adamite crystals. This is a particularly fine example sporting large, undamaged crystals of great beauty. The crystal group at the front left is 2cm in size, with an individual crystal 1.2cm in size. The vug itself is lined with black Plattnerite which provides a stunning backdrop to the green and white crystals.
LL20 - Benitoite with Neptunite $ 5500 Gem Mine, San Benito Co., California, USA small cabinet - 5.5 x 4.5 x 2 cm ![]() ![]() ![]() ![]() ![]() Classic combination of Benitoite with black Neptunite featuring 2 large Benitoite crystals and a number of smaller crystals. The front crystal is 2.2cm while the one just behind it is also large at 2cm. Importantly, the crystals are sharply formed with good blue color and transparency at the tips. Undamaged.
LL828 - Smokey Quartz (R) $ 2000 Hallelujah Junction area, Washoe Co., Nevada, USA cabinet - 13.5 x 8.5 x 5.5 cm ![]() ![]() ![]() ![]() ![]() Tall Smokey Quartz scepter on matrix. These are found in sand filled cavities in Granite, usually only as single crystals and less commonly as matrix specimens. It displays a wonderful contrast between the light scepter head and the darker, gem quality stalk. It has one repair at the base of the stalk where it attaches to the matrix. The good luster of the scepter head and the complete transparency of the main crystal make this an exceptional specimen for the locality.
LL21 - Calcite over Wulfenite $ 600 Los Lamentos, Chihuahua, Mexico miniature - 4.5 x 4 x 3.5 cm ![]() ![]() ![]() ![]() Large, translucent yellow Wulfenite crystals coated by tiny white Calcite crystals. This style is uncommon and the crystals are large, up to 4.5cm across. There are some incomplete crystals along the edges, but an attractive rarity regardless.
LL815 - Neptunite (twin) $ 750 Gem Mine, San Benito Co., California, USA miniature - 4 x 2 x 2 cm ![]() ![]() Elongated X-shaped, interpenetrant twin Neptunite crystal perched on matrix. The Neptunite twin is 3.2cm long and complete and undamaged on both sides. The world's best Neptunite is found at this mine, and these x-shaped twins are rare to find.
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