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MK641 - Cobaltian Calcite with Kolwezite $ 2750 Mupine Mine, Kolwezi Miniing Dist., Lualaba, DR Congo small cabinet - 6.8 x 3 x 3 cm ![]() ![]() ![]() ![]() ![]() Exceedingly large single pink Cobaltian Calcite crystal from the Congo. This is a complete scalenohedral crystal that is partially doubly terminated along the bottom. Translucent and undamaged with green Kolwezite adding color contrast. This is the largest single Cobaltian Calcite I've ever seen from the locality. Last photo is backlit.
MK642 - Tourmaline with Quartz (R) $ 2500 Aricanga Mine, Sao Jose da Safira, Minas Gerais, Brazil small cabinet - 6 x 3 x 2.2 cm ![]() ![]() ![]() ![]() ![]() Doubly-terminated Quartz crystal attached to a doubly-terminated blue/green Tourmaline crystal. This is a classic and aesthetic Brazilian Tourmaline combo. The Tourmaline is 6 x 1.1cm in size and transparent to translucent. Purple Lepidolite attached to the Quartz adds color contrast. The crystal has one repair and a slight amount of restoration along the repair. Comes with a custom Lucite base.
MK643 - Tourmaline with Quartz, Lepidolite (R) $ 1200 Aricanga Mine, Sao Jose da Safira, Minas Gerais, Brazil small cabinet - 5.5 x 2.5 x 2.3 cm ![]() ![]() ![]() ![]() Doubly-terminated Quartz crystal with an attached doubly-terminated blue/green Tourmaline crystal. This is a classic and aesthetic Brazilian Tourmaline combo. The Tourmaline is 3.4 x 0.8cm in size and transparent to translucent. Purple Lepidolite adds color contrast. The crystal has one repair and was reattached to the Quartz crystal.
MK645 - Covellite $ 2250 Summitville, Rio Grande Co., Colorado, USA small cabinet - 6 x 5 x 4.5 cm ![]() ![]() ![]() ![]() Cluster of irridescent purple/blue Covellite crystals on matrix from Summitville, Colorado. Well balanced specimen loaded with great crystals.
MK648 - Azurite $ 450 Milpillas Mine, Cuitaca, Sonora, Mexico small cabinet - 9 x 5 x 5 cm ![]() ![]() ![]() ![]() Unusual Milpillas specimen composed of thin, wafer-like Azurite crystals in a flower-like formation. The Azurite has a much different than normal, lighter bright blue coloration. This has never been cleaned and more of the white clay couldlikely be removed if desired.
MK649 - Azurite $ 2000 Touissit Mine, Oujda-Angad Prov., Morocco small cabinet - 5.7 x 1.8 x 1 cm ![]() ![]() ![]() ![]() Tall, elongated single Azurite crystal from the Touissit Mine in Morocco. The crystal has crisp edges and a sharp, chisel termination. Complete all around and undamaged stunning Azurite. Ex. Mari-Anne Castiaux, Valere Berlage. Comes with a custom Lucite base.
MK650 - Azurite with Shattuckite $ 200 Milpillas Mine, Cuitaca, Sonora, Mexico small cabinet - 6 x 4 x 2.5 cm ![]() ![]() ![]() Unusual Milpillas specimen composed of thin, wafer-like Azurite crystals with a much different than normal, lighter bright blue coloration. The Azurite blades are intergrown with sky-blue Shattuckite. Some of the Azurite have pseudomorphed to a bright green Malachite providing even more wild coloration to this specimen.
MK652 - Azurite with Malachite $ 1400 Christiana Mine, Lavrion District Mines, Lavrion District, Attiki Prefecture, Greece thumbnail - 2.5 x 1.5 x 1.4 cm ![]() ![]() ![]() Rare and beautiful gem Azurite crystal from a small find in 2018 at the Christiana Mine in Greece. This is an outstanding and aesthetic Greek Azurite with glossy luster and associated Malachite and Calcite. Vivid blue and transparent with backlighting. Ex. Jon Sigerman.
MK673 - Sphalerite on Fluorite $ 1250 Denton Mine, Hardin Co., Illinois, USA small cabinet - 6.8 x 4.5 x 3 cm ![]() ![]() ![]() ![]() ![]() Purple/blue cubic Fluorite with attached Sphalerite crystals from the Denton Mine. This is a wonderful and colorful piece with stepped growth features on the faces, good clarity, and nice phantoms/color zoning inside. There are a couple small Sphalerite included within the Fluorite too. Pristine.
MK674 - Peridot $ 1200 Sapat Gali, Kaghan Valley, Mansehra District, Pakistan thumbnail - 2.4 x 1.6 x 1.2 cm ![]() ![]() ![]() ![]() Single Peridot crystal with exceptional bright green color, clarity, and sharp, smooth crystal faces. Some many Peridot crystals tend towards an olive green color and rounded rather that crisp edges. With the exception of two termination faces that are slightly less smooth, all the crystal faces are perfectly flat and lustrous. The color is a superb bright vivid green. A Peridot of rare quality which I have owned for 20 years or more. Better than photos!
MK676 - Grossular $ 3350 Jeffrey Mine, Asbestos, Quebec, Canada thumbnail - 2.5 x 1.7 x 1.3 cm ![]() ![]() ![]() ![]() Group of transparent, gem quality orange Grossular crystals from the Jeffrey Mine. The main crystal is 1.4cm wide, entirely transparent, and complete all around (can be displayed equally well from either side). There is a single tiny edge nick, otherwise pristine and perfect all around. Ex. Charlie Key.
MK678 - Azurite $ 850 Milpillas Mine, Cuitaca, Sonora, Mexico miniature - 4.5 x 4 x 2.4 cm ![]() ![]() ![]() Robust cluster of thick, doubly-terminated Azurite crystals from the Milpillas Mine. There are some bits of matrix attached to the crystals on back, but this is essentially a floater cluster of nothing but intergrown Azurite crystals. Highly showy example from this prolific Azurite locality that is no longer producing.
MK679 - Azurite $ 200 Milpillas Mine, Cuitaca, Sonora, Mexico miniature - 4.7 x 3 x 1.3 cm ![]() ![]() ![]() Sculptural cluster of elongated Azurite crystals from the Milpillas Mine. Good luster and bright 'electric' blue falashes in areas. Highly showy example from this prolific Azurite locality that is no longer producing.
MK680 - Miargyrite, Pyrrhotite $ 450 Rosebud Mine, Pershing Co., Nevada, USA cabinet - 9.5 x 6 x 3.5 cm ![]() ![]() ![]() ![]() ![]() Blue/green matrix covered by a layer of drusy Quartz hosting larger, brassy crystals of Pyrrhotite and smaller black crystals of Miargyrite from an old Gold and Silver mine in Nevada. Excellent for the species with well formed Miargyrite crystals to over3mm in size and crystal groups to 6mm wide. Miargyrite is a rare silver sulphosalt species.
MK681 - Apatite $ 1250 Merelani Hills, Arusha, Tanzania thumbnail - 2.5 x 1.2 x 0.5 cm ![]() ![]() ![]() Single blue Apatite crystal of exceptional size and quality from the Merelani Tanzanite mines. This is a complete, gem quality crystal with a steep, multi-faceted termination. There are a couple edge chips, but it is in overall excellent condition and one of the better I've seen from the locality. This is likely from the Karo Mine where the best Apatite were found years ago. This is an excellent crystal and the pictures don't do it justice.
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