{"product_id":"fluorescent-ruby-corundum-with-blue-kyanite-in-quartz-minas-gerais-brazil-0-78-lbs","title":"Fluorescent Ruby Corundum with Blue Kyanite in Quartz – Minas Gerais, Brazil – 0.78 lbs","description":"\u003cp data-start=\"115\" data-end=\"478\" class=\"PDq2pG_selectionAnchorContainer\"\u003eA remarkable Fluorescent Ruby Corundum with Blue Kyanite in Quartz specimen from Minas Gerais, Brazil, featuring dense sprays of bladed blue kyanite distributed across a substantial quartz-rich formation. Mounted upright on a custom display base, the specimen presents a broad crystallized face with strong color, layered texture, and impressive cabinet presence.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"480\" data-end=\"906\"\u003eUnder ordinary lighting, numerous pale blue to medium-blue kyanite blades overlap and intersect throughout the formation. Many display pronounced lengthwise striations, flat reflective surfaces, and naturally irregular terminations. Colorless-to-milky quartz fills the spaces between the blades, creating bright contrast while preserving openings and recessed areas that give the specimen considerable three-dimensional depth.\u003c\/p\u003e\n\u003cp data-start=\"908\" data-end=\"1493\"\u003eThe specimen transforms dramatically beneath ultraviolet illumination. Large portions of the bladed formation produce vivid pink, magenta, and red fluorescence, with selected areas appearing especially intense. This response is consistent with chromium-bearing material within the association. Chromium can produce red fluorescence in both ruby corundum and some kyanite; without analytical mapping, the exact contribution of each mineral cannot be separated from photographs alone. The corundum identification and Brazilian locality are presented according to the supplied provenance.\u003c\/p\u003e\n\u003cp data-start=\"1495\" data-end=\"1813\"\u003eThe ultraviolet response also reveals zoning and growth patterns that are far less apparent under ordinary lighting. Individual blades, intersecting crystal groups, and internal structures become outlined in contrasting pink-red and blue-white tones, giving the specimen two dramatically different display appearances.\u003c\/p\u003e\n\u003cp data-start=\"1815\" data-end=\"2174\"\u003eMeasuring approximately 4 × 1.5 × 3 inches and weighing 0.78 pounds, this is a substantial mounted cabinet specimen. Its combination of abundant blue kyanite, ruby-bearing corundum association, quartz matrix, intense UV response, and attractive elevated presentation makes it an excellent centerpiece for a fluorescent-mineral or Brazilian mineral collection.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1a3ueyz\" data-start=\"2176\" data-end=\"2193\"\u003eSpecifications\u003c\/h2\u003e\n\u003cp data-start=\"2195\" data-end=\"2252\"\u003eMinerals: Blue Kyanite, Ruby-Bearing Corundum, and Quartz\u003c\/p\u003e\n\u003cp data-start=\"2254\" data-end=\"2284\"\u003eLocality: Minas Gerais, Brazil\u003c\/p\u003e\n\u003cp data-start=\"2286\" data-end=\"2328\"\u003eWeight: 0.78 lbs (approximately 354 grams)\u003c\/p\u003e\n\u003cp data-start=\"2330\" data-end=\"2374\"\u003eDimensions: Approximately 4 × 1.5 × 3 inches\u003c\/p\u003e\n\u003cp data-start=\"2376\" data-end=\"2466\"\u003eColor Under White Light: Pale blue to medium blue, colorless, milky white, cream, and gray\u003c\/p\u003e\n\u003cp data-start=\"2468\" data-end=\"2565\"\u003eFluorescence: Strong pink, magenta, and red response across substantial portions of the formation\u003c\/p\u003e\n\u003cp data-start=\"2567\" data-end=\"2713\"\u003eUV Disclosure: Fluorescent color and intensity may vary according to UV wavelength, lamp strength, ambient lighting, exposure, and camera settings\u003c\/p\u003e\n\u003cp data-start=\"2715\" data-end=\"2808\"\u003eCrystal Habit: Flattened and elongated kyanite blades with pronounced longitudinal striations\u003c\/p\u003e\n\u003cp data-start=\"2810\" data-end=\"2907\"\u003eAssociated Material: Quartz-rich matrix with corundum identified according to supplied provenance\u003c\/p\u003e\n\u003cp data-start=\"2909\" data-end=\"2942\"\u003eKyanite Chemical Formula: Al₂SiO₅\u003c\/p\u003e\n\u003cp data-start=\"2944\" data-end=\"2976\"\u003eCorundum Chemical Formula: Al₂O₃\u003c\/p\u003e\n\u003cp data-start=\"2978\" data-end=\"3007\"\u003eQuartz Chemical Formula: SiO₂\u003c\/p\u003e\n\u003cp data-start=\"3009\" data-end=\"3042\"\u003eKyanite Crystal System: Triclinic\u003c\/p\u003e\n\u003cp data-start=\"3044\" data-end=\"3077\"\u003eCorundum Crystal System: Trigonal\u003c\/p\u003e\n\u003cp data-start=\"3079\" data-end=\"3110\"\u003eQuartz Crystal System: Trigonal\u003c\/p\u003e\n\u003cp data-start=\"3112\" data-end=\"3191\"\u003eLuster: Vitreous to pearly kyanite, vitreous quartz, and naturally coated areas\u003c\/p\u003e\n\u003cp data-start=\"3193\" data-end=\"3267\"\u003eTransparency: Translucent to opaque with selected light-transmitting edges\u003c\/p\u003e\n\u003cp data-start=\"3269\" data-end=\"3329\"\u003eMounting: Affixed to a custom display base produced in-house\u003c\/p\u003e\n\u003cp data-start=\"3331\" data-end=\"3373\"\u003eDisplay: Elevated upright cabinet specimen\u003c\/p\u003e\n\u003cp data-start=\"3375\" data-end=\"3556\"\u003eCondition: Natural mineral specimen with inherent contacts, cleavage, incomplete blades, surface coatings, matrix attachments, extraction-related irregularities, and minor edge wear\u003c\/p\u003e\n\u003cp data-start=\"3558\" data-end=\"3578\"\u003eExact specimen shown\u003c\/p\u003e\n\u003ch2 data-section-id=\"7c1tl\" data-start=\"3580\" data-end=\"3629\"\u003eAbout Kyanite, Ruby Corundum, and Fluorescence\u003c\/h2\u003e\n\u003cp data-start=\"3631\" data-end=\"3879\"\u003eKyanite is an aluminum silicate mineral that forms under high-pressure metamorphic conditions. It commonly develops as elongated, flattened blades and is especially recognizable by its blue coloration, prominent cleavage, and lengthwise striations.\u003c\/p\u003e\n\u003cp data-start=\"3881\" data-end=\"4099\"\u003eKyanite has strongly directional hardness. Its resistance to scratching differs depending on the direction in which it is tested, an unusual property that historically led to the name “disthene,” meaning two strengths.\u003c\/p\u003e\n\u003cp data-start=\"4101\" data-end=\"4456\"\u003eRuby is the chromium-bearing red variety of corundum. Corundum consists primarily of aluminum oxide, while small amounts of chromium can produce pink-to-red coloration and powerful red fluorescence. Chromium may also substitute for aluminum within some kyanite, allowing blue kyanite itself to produce a red response under certain ultraviolet wavelengths.\u003c\/p\u003e\n\u003cp data-start=\"4458\" data-end=\"4915\"\u003eBecause both minerals can potentially contribute to the observed response, fluorescence alone should not be treated as definitive proof that every glowing blade is ruby. The vivid reaction nevertheless provides excellent evidence of chromium-bearing mineralization within the specimen. GIA confirms that chromium is responsible for ruby’s red coloration and can also produce its characteristic red fluorescence. (\u003ca data-start=\"4871\" data-end=\"4914\" class=\"decorated-link\" rel=\"noopener\" href=\"https:\/\/www.gia.edu\/ruby-description?utm_source=chatgpt.com\"\u003eGIA\u003c\/a\u003e)\u003c\/p\u003e\n\u003cp data-start=\"4917\" data-end=\"5261\"\u003eQuartz forms the pale supporting matrix, providing visual contrast and helping preserve the complex arrangement of kyanite blades. Minas Gerais is internationally celebrated for its diverse metamorphic and pegmatitic mineral deposits, which have produced many important quartz, corundum, kyanite, tourmaline, and associated collector specimens.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1punl39\" data-start=\"5263\" data-end=\"5281\"\u003eCollector Notes\u003c\/h2\u003e\n\u003cp data-start=\"5283\" data-end=\"5306\"\u003eThis specimen features:\u003c\/p\u003e\n\u003cul data-start=\"5308\" data-end=\"6059\"\u003e\n\u003cli data-section-id=\"1fwba47\" data-start=\"5308\" data-end=\"5363\"\u003eNatural mineral association from Minas Gerais, Brazil\u003c\/li\u003e\n\u003cli data-section-id=\"1cs3bdf\" data-start=\"5364\" data-end=\"5411\"\u003eDense coverage of pale-to-medium blue kyanite\u003c\/li\u003e\n\u003cli data-section-id=\"3j2j66\" data-start=\"5412\" data-end=\"5461\"\u003eNumerous elongated and flattened crystal blades\u003c\/li\u003e\n\u003cli data-section-id=\"r610w1\" data-start=\"5462\" data-end=\"5506\"\u003ePronounced longitudinal crystal striations\u003c\/li\u003e\n\u003cli data-section-id=\"1yb3h1g\" data-start=\"5507\" data-end=\"5562\"\u003eRuby-bearing corundum association based on provenance\u003c\/li\u003e\n\u003cli data-section-id=\"t9qhq5\" data-start=\"5563\" data-end=\"5609\"\u003eContrasting colorless-to-milky quartz matrix\u003c\/li\u003e\n\u003cli data-section-id=\"nxd9tf\" data-start=\"5610\" data-end=\"5657\"\u003eStrong pink, magenta, and red UV fluorescence\u003c\/li\u003e\n\u003cli data-section-id=\"11um4ws\" data-start=\"5658\" data-end=\"5718\"\u003eExtensive fluorescent coverage rather than isolated points\u003c\/li\u003e\n\u003cli data-section-id=\"18ddtcr\" data-start=\"5719\" data-end=\"5775\"\u003eVisible fluorescent zoning and crystal-growth patterns\u003c\/li\u003e\n\u003cli data-section-id=\"2vsb9g\" data-start=\"5776\" data-end=\"5837\"\u003eDramatically different appearances under white light and UV\u003c\/li\u003e\n\u003cli data-section-id=\"fou6uo\" data-start=\"5838\" data-end=\"5876\"\u003eStrong three-dimensional intergrowth\u003c\/li\u003e\n\u003cli data-section-id=\"1n4kmm0\" data-start=\"5877\" data-end=\"5913\"\u003eMultiple attractive viewing angles\u003c\/li\u003e\n\u003cli data-section-id=\"1hobe8r\" data-start=\"5914\" data-end=\"5951\"\u003eSubstantial 0.78-pound cabinet size\u003c\/li\u003e\n\u003cli data-section-id=\"1obdbtw\" data-start=\"5952\" data-end=\"5991\"\u003eCustom display base produced in-house\u003c\/li\u003e\n\u003cli data-section-id=\"dgdg6u\" data-start=\"5992\" data-end=\"6033\"\u003eElevated, ready-to-display presentation\u003c\/li\u003e\n\u003cli data-section-id=\"1bmwm75\" data-start=\"6034\" data-end=\"6059\"\u003eExact specimen pictured\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"6061\" data-end=\"6312\"\u003ePerfect for collectors of fluorescent minerals, blue kyanite, ruby corundum, ruby-bearing matrix specimens, Brazilian minerals, Minas Gerais specimens, chromium-bearing minerals, mounted cabinet specimens, and unusual metamorphic mineral associations.\u003c\/p\u003e\n\u003cp data-start=\"6314\" data-end=\"6478\"\u003eKyanite possesses excellent cleavage and individual blades can be fragile. Always handle the specimen by its display base and avoid pressure on projecting crystals.\u003c\/p\u003e\n\u003cp data-start=\"6480\" data-end=\"6530\"\u003eProfessionally packaged and shipped from Colorado.\u003c\/p\u003e\n\u003cp data-start=\"6532\" data-end=\"6574\"\u003eYou will receive the exact specimen shown.\u003c\/p\u003e\n\u003cp data-start=\"6576\" data-end=\"6711\"\u003eEvery order is backed by our commitment to quality and customer satisfaction. Thank you for supporting our family-owned small business.\u003c\/p\u003e","brand":"Serenity Soul Stones","offers":[{"title":"Default Title","offer_id":49749667315962,"sku":null,"price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/2328\/8826\/files\/FluorescentRubyCorundumwithBlueKyaniteinQuartz_MinasGerais_Brazil_0.78lbs_5.jpg?v=1784917347","url":"https:\/\/serenitysoulstones.com\/products\/fluorescent-ruby-corundum-with-blue-kyanite-in-quartz-minas-gerais-brazil-0-78-lbs","provider":"Serenity Soul Stones","version":"1.0","type":"link"}