{"product_id":"kyanite-3-00","title":"Kyanite $3.00","description":"\u003cp data-start=\"88\" data-end=\"423\"\u003eBlue kyanites are aluminum silicate minerals with the chemical formula Al₂SiO₅. Known for their striking blue blade-like crystals, these specimens form under high-pressure metamorphic conditions and are often used to study mineral alignment and metamorphic grade in rocks such as schist and gneiss.\u003c\/p\u003e\n\u003cp data-start=\"425\" data-end=\"438\"\u003e\u003cstrong data-start=\"425\" data-end=\"438\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"440\" data-end=\"1308\"\u003e\n\u003cli data-start=\"440\" data-end=\"652\"\u003e\n\u003cp data-start=\"442\" data-end=\"652\"\u003e\u003cstrong data-start=\"442\" data-end=\"458\"\u003eComposition:\u003c\/strong\u003e Made of aluminum silicate, kyanite is polymorphic with andalusite and sillimanite, meaning they share the same chemical composition but form under different temperature and pressure conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"654\" data-end=\"825\"\u003e\n\u003cp data-start=\"656\" data-end=\"825\"\u003e\u003cstrong data-start=\"656\" data-end=\"671\"\u003eAppearance:\u003c\/strong\u003e Typically long and bladed, with color ranging from pale to deep blue. Specimens often exhibit a pearly to vitreous luster and visible crystal striations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"827\" data-end=\"972\"\u003e\n\u003cp data-start=\"829\" data-end=\"972\"\u003e\u003cstrong data-start=\"829\" data-end=\"843\"\u003eFormation:\u003c\/strong\u003e Found in high-pressure metamorphic rocks, especially those formed during regional metamorphism of pelitic (clay-rich) sediments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"974\" data-end=\"1187\"\u003e\n\u003cp data-start=\"976\" data-end=\"1187\"\u003e\u003cstrong data-start=\"976\" data-end=\"1000\"\u003ePhysical Properties:\u003c\/strong\u003e Unusual for having different hardnesses depending on crystal orientation—about 4.5 parallel to the length and 6.5–7 across. This anisotropy makes it useful in studying crystal structure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1189\" data-end=\"1308\"\u003e\n\u003cp data-start=\"1191\" data-end=\"1308\"\u003e\u003cstrong data-start=\"1191\" data-end=\"1213\"\u003eEducational Value:\u003c\/strong\u003e Excellent for teaching about metamorphism, crystal habit, and polymorphism in mineral systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1310\" data-end=\"1425\"\u003eBlue kyanites are valued both for their vivid appearance and their role in illustrating complex geologic processes.\u003c\/p\u003e","brand":"The Science Museum of Minnesota","offers":[{"title":"Default Title","offer_id":47750013583574,"sku":"R300","price":3.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0641\/2491\/1830\/files\/BlueKyaniteRawVariety.webp?v=1769021895","url":"https:\/\/threecrows.com.co\/de\/products\/kyanite-3-00","provider":"ThreeCrowsLLP","version":"1.0","type":"link"}