{"product_id":"corrundum-placer-mineral","title":"Corrundum (Placer) - Mineral","description":"\u003cp\u003e\u003cb\u003eMin\u003c\/b\u003e\u003cb\u003eed from\u003c\/b\u003e\u003cspan\u003e: Alder, Montana\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e: \u003c\/span\u003eThis natural corundum placer specimen comes from the historic gem-bearing gravels of Alder, Montana—an area long celebrated for its sapphires and other alluvial treasures. These water-worn corundum fragments were naturally tumbled by ancient stream systems, giving them a slight rounded appearance that reflects their journey through time. Composed of aluminum oxide, corundum ranks 9 on the Mohs hardness scale, making it one of the hardest minerals on Earth.\u003c\/p\u003e\n\u003cp data-start=\"527\" data-end=\"826\" class=\"\"\u003eWhat sets this piece apart is its UV reactivity—under ultraviolet light, it fluoresces, revealing hidden colors and structures that add intrigue for both collectors and educators. This makes it a fantastic specimen not only for its geological significance but also for display and hands-on learning.\u003c\/p\u003e\n\u003cp data-start=\"828\" data-end=\"1014\" class=\"\"\u003eWhether you're a gem enthusiast, mineral collector, or geology hobbyist, this Montana corundum offers a fascinating look at one of Earth's most durable and visually captivating minerals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChemical Composition\u003c\/strong\u003e: AlO\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eChakra\u003c\/b\u003e: Root Chakra, Heart Chakra\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eSmall\u003cbr\u003eApproximate Size of 1 Piece\u003c\/b\u003e: 12mm x 10mm x 9mm\u003cb\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003eApproximate Weight of 1 Piece\u003c\/b\u003e: 2g\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMedium\u003cbr\u003eApproximate Size of 1 Piece\u003c\/b\u003e: 20mm x 15mm x 10mm\u003cb\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003eApproximate Weight of 1 Piece\u003c\/b\u003e: 8g\u003cbr\u003e\u003cbr\u003e\u003cb\u003eLarge\u003cbr\u003eApproximate Size of 1 Piece\u003c\/b\u003e: 20mm x 20mm x 15mm\u003cb\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003eApproximate Weight of 1 Piece\u003c\/b\u003e: 16g\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e:\u003cstrong\u003e \u003c\/strong\u003e1pc\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cem\u003eWe do our best to buy quality products- although not every rock is the same. If you choose to purchase the \"staff pick option\", we will select the best of the batch for you. Otherwise, it will be at random from the larger batch we have in stock.\u003c\/em\u003e\u003c\/p\u003e","brand":"Montana, U.S.A.","offers":[{"title":"Small \/ Standard","offer_id":46623111282858,"sku":null,"price":20.0,"currency_code":"CAD","in_stock":true},{"title":"Small \/ Staff Pick","offer_id":46623111315626,"sku":null,"price":25.0,"currency_code":"CAD","in_stock":true},{"title":"Medium \/ Standard","offer_id":46623112822954,"sku":null,"price":30.0,"currency_code":"CAD","in_stock":true},{"title":"Medium \/ Staff Pick","offer_id":46623112888490,"sku":null,"price":35.0,"currency_code":"CAD","in_stock":true},{"title":"Large \/ Standard","offer_id":46623112855722,"sku":null,"price":40.0,"currency_code":"CAD","in_stock":true},{"title":"Large \/ Staff Pick","offer_id":46623112921258,"sku":null,"price":45.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/7158\/3658\/files\/Corrundum-Mineral-UVReactive-2.jpg?v=1746404994","url":"https:\/\/rubblerockandgem.com\/hi\/products\/corrundum-placer-mineral","provider":"Rubble Rock And Gem","version":"1.0","type":"link"}