{"product_id":"uv-fluorescent-hyalite-opal-with-polished-base-zacatecas-mexico-37-grams","title":"UV Fluorescent Hyalite Opal with Polished Base – Zacatecas, Mexico – 37 Grams","description":"\u003cp data-start=\"102\" data-end=\"431\" class=\"PDq2pG_selectionAnchorContainer\"\u003eA vivid Fluorescent Hyalite Opal specimen from Zacatecas, Mexico, featuring rounded, glass-like opal growth across contrasting reddish-brown volcanic matrix. One side has been polished flat, creating a stable self-standing base while revealing the specimen’s internal structure and the boundary between the hyalite and host rock.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"433\" data-end=\"819\"\u003eUnder ordinary lighting, the hyalite appears colorless to slightly milky with excellent vitreous luster. Rounded botryoidal formations rise across the natural display face, producing a clustered, bubble-like surface that reflects light from numerous angles. Portions of the material are transparent to translucent, allowing the internal textures and underlying matrix to remain visible.\u003c\/p\u003e\n\u003cp data-start=\"821\" data-end=\"1237\"\u003eUnder ultraviolet illumination, the hyalite transforms into an exceptionally bright electric green. The fluorescence extends across much of the opal formation, clearly outlining individual rounded growths and contrasting dramatically with the comparatively dark matrix. Fluorescent color and intensity may vary depending on the wavelength and strength of the UV lamp, ambient lighting, exposure, and camera settings.\u003c\/p\u003e\n\u003cp data-start=\"1239\" data-end=\"1686\"\u003eHyalite opal is a transparent-to-translucent, water-rich form of common opal known for its glassy appearance. The characteristic green fluorescence frequently associated with Mexican hyalite is generally caused by trace uranium present as uranyl compounds. This is a naturally occurring trace-element response and does not mean the specimen is artificially treated. The exact chemistry of this individual specimen has not been analytically tested.\u003c\/p\u003e\n\u003cp data-start=\"1688\" data-end=\"1896\"\u003eMeasuring approximately 1 × 1 × 1 inch and weighing 37 grams, this compact specimen combines strong natural form, brilliant fluorescence, classic Mexican provenance, and convenient self-standing presentation.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1a3ueyz\" data-start=\"1898\" data-end=\"1915\"\u003eSpecifications\u003c\/h2\u003e\n\u003cp data-start=\"1917\" data-end=\"1938\"\u003eMineral: Hyalite Opal\u003c\/p\u003e\n\u003cp data-start=\"1940\" data-end=\"1967\"\u003eLocality: Zacatecas, Mexico\u003c\/p\u003e\n\u003cp data-start=\"1969\" data-end=\"1985\"\u003eWeight: 37 grams\u003c\/p\u003e\n\u003cp data-start=\"1987\" data-end=\"2027\"\u003eDimensions: Approximately 1 × 1 × 1 inch\u003c\/p\u003e\n\u003cp data-start=\"2029\" data-end=\"2110\"\u003eColor Under White Light: Colorless to milky white hyalite on reddish-brown matrix\u003c\/p\u003e\n\u003cp data-start=\"2112\" data-end=\"2188\"\u003eFluorescence: Intense electric-green response under ultraviolet illumination\u003c\/p\u003e\n\u003cp data-start=\"2190\" data-end=\"2336\"\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=\"2338\" data-end=\"2395\"\u003eCrystal Form: Rounded botryoidal and globular opal growth\u003c\/p\u003e\n\u003cp data-start=\"2397\" data-end=\"2427\"\u003eLuster: Vitreous to glass-like\u003c\/p\u003e\n\u003cp data-start=\"2429\" data-end=\"2496\"\u003eTransparency: Transparent to translucent hyalite with opaque matrix\u003c\/p\u003e\n\u003cp data-start=\"2498\" data-end=\"2547\"\u003eChemical Composition: Hydrated silica — SiO₂·nH₂O\u003c\/p\u003e\n\u003cp data-start=\"2549\" data-end=\"2574\"\u003eMineral Class: Mineraloid\u003c\/p\u003e\n\u003cp data-start=\"2576\" data-end=\"2610\"\u003eMohs Hardness: Approximately 5–6.5\u003c\/p\u003e\n\u003cp data-start=\"2612\" data-end=\"2660\"\u003eMatrix: Natural reddish-brown volcanic host rock\u003c\/p\u003e\n\u003cp data-start=\"2662\" data-end=\"2758\"\u003eFinish: One side polished flat to create a stable display base and expose the interior structure\u003c\/p\u003e\n\u003cp data-start=\"2760\" data-end=\"2813\"\u003eDisplay: Naturally self-standing on its polished base\u003c\/p\u003e\n\u003cp data-start=\"2815\" data-end=\"2992\"\u003eCondition: Natural mineral specimen with inherent inclusions, contacts, surface textures, matrix variations, internal fractures, and preparation marks along the polished surface\u003c\/p\u003e\n\u003cp data-start=\"2994\" data-end=\"3014\"\u003eExact specimen shown\u003c\/p\u003e\n\u003ch2 data-section-id=\"kl64hq\" data-start=\"3016\" data-end=\"3037\"\u003eAbout Hyalite Opal\u003c\/h2\u003e\n\u003cp data-start=\"3039\" data-end=\"3363\"\u003eHyalite is a transparent or translucent variety of common opal characterized by its colorless appearance, rounded growth forms, and glass-like luster. Unlike precious opal, it generally does not display play-of-color. Its appeal comes from its clarity, sculptural botryoidal formation, and frequent ultraviolet fluorescence.\u003c\/p\u003e\n\u003cp data-start=\"3365\" data-end=\"3597\"\u003eOpal is a hydrated form of silica containing variable amounts of water. Because it lacks the consistently ordered crystal structure of minerals such as quartz, it is classified as a mineraloid rather than a true crystalline mineral.\u003c\/p\u003e\n\u003cp data-start=\"3599\" data-end=\"3911\"\u003eFluorescent hyalite from Mexico is especially prized by ultraviolet-mineral collectors. Trace uranyl compounds commonly act as fluorescent activators, producing a powerful green response under ultraviolet illumination. The precise reaction can differ significantly between shortwave, midwave, and longwave lamps.\u003c\/p\u003e\n\u003cp data-start=\"3913\" data-end=\"4110\"\u003eHyalite should be protected from hard impacts, prolonged heat, and sudden temperature changes. Clean gently with a soft dry brush or microfiber cloth and avoid prolonged soaking or harsh chemicals.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1punl39\" data-start=\"4112\" data-end=\"4130\"\u003eCollector Notes\u003c\/h2\u003e\n\u003cp data-start=\"4132\" data-end=\"4155\"\u003eThis specimen features:\u003c\/p\u003e\n\u003cul data-start=\"4157\" data-end=\"4686\"\u003e\n\u003cli data-section-id=\"9swg61\" data-start=\"4157\" data-end=\"4202\"\u003eNatural hyalite opal from Zacatecas, Mexico\u003c\/li\u003e\n\u003cli data-section-id=\"1i4sxka\" data-start=\"4203\" data-end=\"4243\"\u003eIntense electric-green UV fluorescence\u003c\/li\u003e\n\u003cli data-section-id=\"iham50\" data-start=\"4244\" data-end=\"4272\"\u003eBroad fluorescent coverage\u003c\/li\u003e\n\u003cli data-section-id=\"3rxg9t\" data-start=\"4273\" data-end=\"4325\"\u003eColorless-to-milky appearance under ordinary light\u003c\/li\u003e\n\u003cli data-section-id=\"3ujos3\" data-start=\"4326\" data-end=\"4369\"\u003eTransparent and translucent viewing areas\u003c\/li\u003e\n\u003cli data-section-id=\"7d42mt\" data-start=\"4370\" data-end=\"4402\"\u003eRounded botryoidal opal growth\u003c\/li\u003e\n\u003cli data-section-id=\"12bbi3e\" data-start=\"4403\" data-end=\"4437\"\u003eBright glass-like surface luster\u003c\/li\u003e\n\u003cli data-section-id=\"92b7m4\" data-start=\"4438\" data-end=\"4481\"\u003eContrasting reddish-brown volcanic matrix\u003c\/li\u003e\n\u003cli data-section-id=\"13hyrwf\" data-start=\"4482\" data-end=\"4533\"\u003ePolished surface revealing the internal structure\u003c\/li\u003e\n\u003cli data-section-id=\"pu301a\" data-start=\"4534\" data-end=\"4569\"\u003eStable self-standing presentation\u003c\/li\u003e\n\u003cli data-section-id=\"1opubd3\" data-start=\"4570\" data-end=\"4622\"\u003eDramatic transformation between white light and UV\u003c\/li\u003e\n\u003cli data-section-id=\"kw1r8q\" data-start=\"4623\" data-end=\"4660\"\u003eCompact and highly displayable size\u003c\/li\u003e\n\u003cli data-section-id=\"1bmwm75\" data-start=\"4661\" data-end=\"4686\"\u003eExact specimen pictured\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4688\" data-end=\"4914\"\u003ePerfect for collectors of hyalite opal, fluorescent minerals, Mexican minerals, Zacatecas specimens, botryoidal opal, uranium-activated fluorescence, UV-reactive minerals, polished-base specimens, and compact mineral displays.\u003c\/p\u003e\n\u003cp data-start=\"4916\" data-end=\"4966\"\u003eProfessionally packaged and shipped from Colorado.\u003c\/p\u003e\n\u003cp data-start=\"4968\" data-end=\"5010\"\u003eYou will receive the exact specimen shown.\u003c\/p\u003e\n\u003cp data-start=\"5012\" data-end=\"5147\"\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":49749709816058,"sku":null,"price":37.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/2328\/8826\/files\/UVFluorescentHyaliteOpalwithPolishedBase_Zacatecas_Mexico_37Grams_4.jpg?v=1784919017","url":"https:\/\/serenitysoulstones.com\/products\/uv-fluorescent-hyalite-opal-with-polished-base-zacatecas-mexico-37-grams","provider":"Serenity Soul Stones","version":"1.0","type":"link"}