{"product_id":"rare-hackmanite-loose-stones","title":"Rare UV Reactive Hackmanite Loose Stones from Afghanistan | Natural, Untreated","description":"\u003ch3\u003eNatural Hackmanite Loose Stones — UV Reactive, Untreated, Afghanistan Origin\u003c\/h3\u003e\n\u003cp\u003eThis listing features a curated parcel of genuine, earth-mined Hackmanite loose stones sourced directly from Afghanistan — one of the few known localities producing gem-quality material. Each stone is 100% natural with no treatment applied.\u003c\/p\u003e\n\u003cp\u003eHackmanite is a rare sulfur-bearing variety of sodalite known for its tenebrescence — a reversible color-change phenomenon where the stone shifts color upon exposure to UV or sunlight, then gradually returns to its original hue in the dark. The UV fluorescence on these stones is rated \u003cstrong\u003eStrong\u003c\/strong\u003e, as visible in the UV photo: stones glow in vivid orange-red tones under shortwave UV light.\u003c\/p\u003e\n\u003ch3\u003eStone Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStone Name:\u003c\/strong\u003e Hackmanite (UV Reactive Sodalite variety)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Afghanistan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e Semi-precious stone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Loose Stones | Faceted Gems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarat Weight Range:\u003c\/strong\u003e Under 1 carat to 1.01–3 carats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShapes Available:\u003c\/strong\u003e Cushion, Emerald Cut, Princess, Radiant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Lavender, Purplish Pink, Blue, Purple, Light Pink\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e Included (I), Slightly Included (SI), Very Slightly Included (VS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e None — 100% natural, earth-mined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluorescence Under UV:\u003c\/strong\u003e Strong (orange-red glow)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Good (G)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRarity:\u003c\/strong\u003e Super Rare\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthenticity:\u003c\/strong\u003e Genuine natural gemstone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBirthstone:\u003c\/strong\u003e February (alternative birthstone)\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat You See in the Photos\u003c\/h3\u003e\n\u003cp\u003eThe daylight photo shows the parcel laid out on a gem tray — stones display a range of lavender, blue, purple, and purplish-pink tones in natural light. The UV photo shows the same stones under shortwave UV illumination, where they fluoresce in strong orange-yellow to red tones — a direct demonstration of the tenebrescent behavior Hackmanite is known for.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes Hackmanite permanently change color?\u003c\/h4\u003e\n\u003cp\u003eNo. Hackmanite is tenebrescent — it shifts color when exposed to UV or sunlight, then reverts to its original color in darkness. This cycle is reversible and repeatable.\u003c\/p\u003e\n\u003ch4\u003eIs Hackmanite suitable for use in jewelry?\u003c\/h4\u003e\n\u003cp\u003eYes, though it has a Mohs hardness of 5.5–6, making it best suited for pendants, earrings, and brooches rather than rings subject to daily abrasion.\u003c\/p\u003e\n\u003ch4\u003eWhat causes the strong UV fluorescence in Hackmanite?\u003c\/h4\u003e\n\u003cp\u003eThe fluorescence is caused by sulfur-based color centers (F-centers) within the sodalite crystal structure, which absorb and re-emit UV energy as visible orange-red light.\u003c\/p\u003e","brand":"Gemstones Finder","offers":[{"title":"Default Title","offer_id":51533236568370,"sku":"HACK-525","price":550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/8583\/5314\/files\/rare-hackmanite-loose-stones.jpg?v=1785671148","url":"https:\/\/www.gemstonesfinder.com\/products\/rare-hackmanite-loose-stones","provider":"Gemstones Finder","version":"1.0","type":"link"}