Calcite

Manganite, Ilfeld, Nordhausen, Harz, Thuringia, Germany. Overall Measurements: 6.49 x 3.34 x 2.65 inches (16.5 x 8.5 x 6.74 cm). Sold for $149,000. Photo Heritage Auctions DALLAS, TX.- A cluster of midnight-black Manganite crystals, from Germany's Harz Mountains, sold for $149,000 to lead Heritage Auctions' $1.3 million Nature & Science Signature Auction. More than 200 lots changed hands as multiple bidders pushed prices for exemplary varieties past high estimates at the May 4 auction in Dallas. "This category... [Lire la suite]

Shiny silver dyscrasite crystals with allergentum in calcite from Morocco.

Apophyllite over Quartz and Stilbite Stolzite Fluorite, Calcite // Elmwood Mine, Smith County, Tennessee, USA Tanzanite Natural Gem Crystal.

Fluorite on Calcite Minerals from Caravia Mine, Caravia, Asturias, Spain, Europe

Calcite with Sphalerite

Red Reticulated Rutile - Brazil Pentagonite - India Calcite - China Aqua Aura Kyanite (Black Kyanite infused with Gold) - Brazil Smithsonite on Coronadite - Australia. Azurite and Malachite ps. after Selenite. Crystalline "feather" of Electrum (Silver and Gold mix) on Quartz matrix - Nevada

Native Sulfur inclusions inside and atop Gypsum crystals. From the Gaurdak Sulfur Dept., Chardzhou, Lebap Province, Turkmenistan. Measures 8 cm by 7.5 cm by 7 cm in total size. Native Copper wires inside a Calcite vug colored by Chalcotrichite (Cuprite). From Bisbee, Cochise County, Arizona. Measures 8.8 cm by 13.4 cm by 7.5 cm in total size. Ex. Arizona-Sonora Desert Museum Collection Malachite on Alabandite from the Bisbee Copper Mines. From the Copper Queen Mine, Bisbee, Cochise County, Arizona. Measures 10 cm by 9.8... [Lire la suite]

Tourmaline from Vietnam by Dan Weinrich Spinel in Calcite - Vietnam Liddicoatite with Quartz - Vietnam

APOPHYLLITE3.5" acrossWell Pocket, Poona District, Maharashtra, IndiaCollection of Russ BEHNKE, Meriden, Connecticut, U.S.APhoto : Russ BEHNKE © TOURMALINE33.54 caratsNewry, Maine, U.S.A"One of the top 10 cut stones from the 1972 discovery."Photo : Russ BEHNKE ©   MALACHITE after AZURITE2.5" acrossTsumeb, NamibiaEx. Harvard UniversityCollection of Russ BEHNKE, Meriden, Connecticut, U.S.APhoto : Russ BEHNKE ©   SPHENECrystal is 1.5" longGilgit, PakistanCollection of Russ BEHNKE, Meriden,... [Lire la suite]

Stilbite crystals on Black Chalcedony - India Calcite with Hematite inclusions - Namibia Youngite - Wyoming Youngite is a local name for agate or jasper coated by drusy quartz crystals. It is found near Guernsey Wyoming in limestone rocks. Iridescent Adularia - France Apophyllite crystals over pink Stellerite on Basalt matrix - India (source http://bijoux-et-mineraux.tumblr.com)