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AF721 - Prehnite on Tanzanite $ 3900 Merelani Hills, Lelatema Mountains, Arusha Region, Tanzania thumbnail - 2.9 x 2 x 1 cm Killer Tanzanite thumbnail that's also a great association piece too. Fine, gemmy blue Tanzanite crystal with excellent luster and great transparency with attached large, single Prehnite crystals (analyzed) on the backside. Prehnite from Merelani is usually seen as rounded aggregates, yet on this specimen they occur as individual crystals to 7mm wide. In addition to the Prehnite, there are white crystals of an unidentified mineral also attached to the backside. A very nice Tanzanite, undamaged with TOP luster, good color and highly gemmy.
NA473 - Calcite on Conichalcite $ 150 Level 5, Mina Ojuela, Mapimi, Durango, Mexico thumbnail - 2.9 x 2.5 x 2 cm ex. Carl Acosta Translucent Calcite crystals to 2.4cm atop green Conichalcite. Stunning thumbnail sized specimen from the Carl Acosta collection.
E101 - Cuprite $ 240 Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia thumbnail - 3 x 2.5 x 2.0 cm Cluster of octahedral Cuprite that is complete all around. Good large crystals to 2.4cm in longest dimension, with bevelled edges. No longer being found.
E103 - Cuprite with Miersite $ 450 Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia thumbnail - 2.4 x 1.7 x 1.7 cm Cluster of octahedral Cuprite crystals with associated bright yellow Miersite (which is a member of the chlorargyrite group of minerals). Only a small number of the recovered Cuprite specimens were associated with Miersite. Complete, undamaged floater specimen with no points of contact.
E104 - Cuprite with Silver and Copper $ 600 Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia thumbnail - 2.6 x 2.5 x 1.9 cm Cluster of octahedral Cuprites with associated Silver and Copper. This is a fabulous, complete and undamaged floater with no points of contact. Individual crystals reach 1.7cm in size.
E108 - Cuprite with Silver $ 275 Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia thumbnail - 1.8 x 1.5 x 1.5 cm Two intergrown octahedral Cuprite crystals with attached Silver. Complete undamaged floater though smaller crystal has an indented growth on one face.
E109 - Cuprite with Silver and Miersite $ 200 Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia thumbnail - 2.6 x 2.3 x 2 cm Cluster of octahedral Cuprite, largest 2.2 cm with associated Silver and small amounts of Copper. Complete all around, contacting on the bottom. Bottom has attached areas of yellow Miersite.
NA215 - Silver $ 1600 Kearsarge Mine, Houghton Co., Michigan thumbnail - 2.5 x 1.5 x 1.4 cm Dramatic cluster of angular Silver crystals, capped by a superb 1.2cm crystal. Tiny amounts of Copper are present on some of the crystal faces. Nothing but good, large crystals. Fine!
NA248 - Cuprian Adamite $ 450 Mina Oujela, Mapimi, Durango, Mexico thumbnail - 2.9 x 2.2 x 2 cm ex. Brett Keller Showy specimen of Cuprian Adamite on Calcite with crystals to 1.3 cm long. Good sized crystals that present dramatically for display.
AF388 - Pyrite on Tanzanite $ 750 Merelani Hills, Lelatema Mtns., Arusha Region, Tanzania thumbnail - 2.5 x 1.5 x 0.8 cm Single Tanzanite crystal with a Pyrite crystal attached to one side. Pyrite is not unusual from Merelani, but Tanzanite specimens with attached Pyrite are fairly uncommon, especially those with the pyrite perched so aesthetically on the Tanzanite. The Tanzanite is also a bi-color with a yellow termination over a blue body color. Unusual addition to a Merelani suite.
AF763 - Tanzanite $ 4500 Merelani Hills, Lelatema Mtns., Arusha Region, Tanzania thumbnail - 3.1 x 1.8 x 0.8 cm Glassy bi-color crystal, blue base with a yellow termination. This crystal has superb luster and unusually uniform shape, retaining an even 8mm thickness all the way from the base to the termination. The yellow zone is facet grade and the blue zone, while having some internal fractures, is still mostly transparent - you can read through most of the crystal. Just a few tiny, trivial nicks otherwise totally undamaged. This is one of, if not the best of these yellow/blue bi-color crystals I have ever seen.
AF531 - Carrollite $ 400 Kamoya South Mine, Kambove, Katanga, Congo thumbnail - 2.8 x 1.9 x 1.8 cm Superb thumbnail specimen composed of mirror lustrous Carrollite crystals atop a thin rhombic Calcite crystal. Crystals are octahedral in shape with the largest crystal 1.5 cm wide.
AF550 - Carrollite $ 200 Kamoya South Mine, Kambove, Katanga, Congo thumbnail - 2.2 x 1.6 x 1.4 cm Fine thumbnail with a 1.4cm Carrollite crystal perched atop smaller Carrollite and chalcopyrite crystals.
E231 - Cuprite $ 280 Poteryaevskoe Mine, Rubtsovskoe deposit, Siberia, Russia thumbnail - 1.5 x 1.5 x 1.5 cm Razor sharp intergrown pair of Cuprite crystals with good luster. Complete floater though back tip is slightly truncated and does not come to a point, undamaged.
TU51 - Tremolite $ 120 Merelani Hills, Lelatema Mountains, Arusha Region, Tanzania thumbnail - 1.8 x 1.5 x 0.6 cm Vivid green Tremolite with a perfect, glassy termination. Not as transparent as some, but with deep green color.
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