{"title":"United States","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eDiscover a world-class collection of mineral specimens from the United States, one of the most diverse and historically important mineral-producing countries globally. The USA is famous for producing some of the finest collector minerals ever found, spanning hydrothermal veins, carbonate deposits, pegmatites and classic mining districts.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eKey localities include \u003cstrong\u003eColorado\u003c\/strong\u003e (\u003cstrong\u003eSweet Home Mine\u003c\/strong\u003e, famous for \u003cstrong\u003erhodochrosite\u003c\/strong\u003e), \u003cstrong\u003eIllinois\u003c\/strong\u003e (fluorite districts such as \u003cstrong\u003eCave-in-Rock\u003c\/strong\u003e), \u003cstrong\u003eArizona\u003c\/strong\u003e (\u003cstrong\u003eBisbee\u003c\/strong\u003e, \u003cstrong\u003eMorenci\u003c\/strong\u003e, \u003cstrong\u003eRed Cloud Mine\u003c\/strong\u003e), \u003cstrong\u003eUtah\u003c\/strong\u003e (\u003cstrong\u003eTopaz Mountain\u003c\/strong\u003e), \u003cstrong\u003eNew Mexico\u003c\/strong\u003e, \u003cstrong\u003eNevada\u003c\/strong\u003e and the Appalachian mining regions. \u003cstrong\u003eFranklin\u003c\/strong\u003e and \u003cstrong\u003eSterling Hill\u003c\/strong\u003e in \u003cstrong\u003eNew Jersey\u003c\/strong\u003e are world-famous for an extraordinary diversity of fluorescent minerals, including vivid \u003cstrong\u003ewillemite\u003c\/strong\u003e, \u003cstrong\u003efranklinite\u003c\/strong\u003e and \u003cstrong\u003ezincite\u003c\/strong\u003e, found nowhere else on Earth in such variety.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis collection features highly sought-after minerals such as \u003cstrong\u003erhodochrosite\u003c\/strong\u003e (Sweet Home Mine, Colorado), \u003cstrong\u003efluorite\u003c\/strong\u003e (Illinois, Colorado and other classic districts), \u003cstrong\u003egalena\u003c\/strong\u003e, \u003cstrong\u003esphalerite\u003c\/strong\u003e, \u003cstrong\u003ewulfenite\u003c\/strong\u003e, \u003cstrong\u003evanadinite\u003c\/strong\u003e, \u003cstrong\u003ebarite\u003c\/strong\u003e, \u003cstrong\u003ecalcite\u003c\/strong\u003e, quartz varieties including terminated \"\u003cstrong\u003eHerkimer diamonds\u003c\/strong\u003e\" from New York State, rare \u003cstrong\u003ebenitoite\u003c\/strong\u003e (California's official state gem), and \u003cstrong\u003egarnet\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe United States is also globally significant for \u003cstrong\u003euranium\u003c\/strong\u003e and secondary \u003cstrong\u003euranium minerals\u003c\/strong\u003e, with classic occurrences in Colorado Plateau districts and historic mining areas, producing specimens valued for both scientific importance and intense fluorescence.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eUS minerals are especially prized for their sharp crystallization, bold colors and iconic worldwide localities. From deep red \u003cstrong\u003erhodochrosite\u003c\/strong\u003e crystals to cubic \u003cstrong\u003efluorite\u003c\/strong\u003e, metallic \u003cstrong\u003egalena\u003c\/strong\u003e and \u003cstrong\u003esphalerite\u003c\/strong\u003e associations, and vibrant secondary uranium minerals, this collection represents some of the most recognizable and desirable mineral species in modern collecting.\u003c\/p\u003e","products":[{"product_id":"lz-matryoshka-calcite-usa","title":"CALCITE “MATRYOSHKA” – Large 12cm Orange Calcite Crystal from Missouri, USA","description":"\u003cp\u003eLarge natural orange Calcite “Matryoshka” crystal from Sweetwater Mine, Reynolds County, Missouri, USA. Exceptional museum-quality specimen over 12 cm with nested calcite growth and sharp crystal faces. \u003cbr\u003e\u003cbr\u003e\u003cstrong data-start=\"470\" data-end=\"487\"\u003eMineral Data:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong data-start=\"488\" data-end=\"503\"\u003eDimensions:\u003c\/strong\u003e 142 x 140 x 93 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal Size:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan\u003e~\u003c\/span\u003e\u003c\/strong\u003e120 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-start=\"522\" data-end=\"533\"\u003eWeight:\u003c\/strong\u003e 1294 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong data-start=\"541\" data-end=\"556\"\u003eProvenance:\u003c\/strong\u003e Sweetwater Mine, Reynolds County, Missouri, USA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ITALMINERAL","offers":[{"title":"Default Title","offer_id":44420141154413,"sku":null,"price":399.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8027\/6333\/files\/imgi_372_AGC_20240909_191142037.jpg?v=1772665369"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8027\/6333\/collections\/WhatsApp_Image_2026-06-25_at_20.38.28.jpg?v=1782413518","url":"https:\/\/www.italmineral.com\/collections\/united-states.oembed","provider":"ITALMINERAL","version":"1.0","type":"link"}