Elbaite Nestled with Pink Kunzite on Smoky Quartz, 10.5 x 24.0 x 20.0 cm. Locality: Mawi pegmatite, Nilaw-Kolum pegmatite field, Du Ab District, Nuristan. Photo from Collector's Edge MineralsThe striking banded rocks of Hosta Beach, North Uist, Outer Hebrides, Scotland. Photo from www.geologypage.comTourmaline Perched on Smoky Quartz on Albite , 17.0 x 16.0 x 9.0 cm. Locality: Paprok, Kamdesh District, Nuristan Province, Afghanistan. Photo from Collector's Edge MineralsAmethyst eyes stalactite, Rio de la Plata, Artigas, Uruguay. Photo from Le Stage Minerals.Chevron folds in radiolarites from Batain, Oman. Photo from Simon Virgo via EGU Blog.Calcite on fluorite, 7.5 x 6 x 5 cm. Locality: Minerva Mine, Hardin Co., Illinois. Photo from Anton Watzl MineralsAzurite with balls of green malachite. From Morenci Mine, Greenlee Co., Arizona. Photo from Wilensky Fine Minerals.Fluorite, 8.4 × 7.0 × 6.3 cm. From the Rotherhope Fell Mine, Black Burn, Alston Moor, Cumbria, England. Photo from Crystal Classics.Quartz sandstone concretion, Fountainbleau, France. 30 million years old. Fontainebleau's sand is famous for its flawlessness and delicacy since the 17th century. These concretions can be found in natural history museums around the world. A particularly well-preserved example of a sandstone concretion is on display at the Smithsonian's National Museum of Natural History. Photo is from the Yale Peabody Museum. Hematite & Rutile on Rutilated Quartz from Novo Horizonte, Brazil. Photo from Instagram.
