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LL737 - Tourmaline $ 350 SOLD 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 SOLD 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 SOLD 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.
LL740 - Chalcopyrite in Fluorite $ 125 SOLD Wet Grooves Mine, Askrigg, Wensleydale, North Yorkshire, England miniature - 3.5 x 3 x 2 cm ![]() ![]() ![]() ![]() ![]() Transparent yellow Fluorite crystals with inclusions of Chalcopyrite. The crystals have high luster and the inclusion add extra sparkle. Undamaged.
LL743 - Adamite $ 150 SOLD Mina Ojuela, Mapimi, Durango, Mexico thumbnail - 2.6 x 2 x 2 cm ![]() ![]() ![]() ![]() ![]() Two interconnected 'pinwheel' clusters of yellow Adamite. Undamaged.
LL744 - Topaz $ 150 SOLD 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.
LL745 - Stibnite in Quartz $ 275 SOLD Bottomley Prospect, Pershing Co., Nevada, USA miniature - 4.8 x 2.5 x 1.5 cm ![]() ![]() ![]() ![]() ![]() Transparent partial Quartz crystal heavily included with metallic Stibnite crystals. This is a good sized crystal for the locality
LL746 - Ludlamite and Vivianite on Siderite $ 250 SOLD Blackbird Mine, Lemhi Co., Idaho, USA thumbnail - 3 x 2.5 x 0.8 cm ![]() ![]() ![]() Green Ludlamite and dark blue/purple Vivianite on tan Siderite. A USA classic now hard to find.
LL747 - Apatite with Tourmaline $ 200 SOLD 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.
LL727 - Gahnite rough and cut $ 350 SOLD 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.
LL728 - Gahnite rough and cut $ 300 SOLD Kagoro, Kaduna State, Nigeria thumbnail - 0.6 x 0.6 x 0.5 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 a round just over 3mm 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.
LL729 - Gahnite rough and cut $ 280 SOLD 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 a round 3mm 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. ©2010-2018 Marin Mineral |