{"product_id":"3-7g-iolite-rough-trichroic-facet-grade-gemstone-pleochroic-crystal-specimen","title":"3.7g Iolite Rough Trichroic Facet Grade Gemstone – Pleochroic Crystal Specimen","description":"\u003cp\u003e\u003cb\u003eNatural Iolite Rough – 3.7g Trichroic Facet Grade Gemstone – Deep Violet-Blue, Golden \u0026amp; Gray Pleochroic Crystal\u003c\/b\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cb\u003eAn extraordinary Iolite crystal that shifts through deep violet-blue, smoky gray, and golden hues under light — a textbook example of rare trichroism. Weighing 3.7 grams, this translucent rough is collector-grade and ideal for faceting or display.\u003c\/b\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e💎\u003cb\u003e Gemological Notes\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\t•\tStone: Iolite (Cordierite)\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\t•\tWeight: 3.7 grams (~18.5 carats)\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\t•\tTransparency: Semi-transparent with vivid pleochroic shift\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\t•\tObserved Colors: Deep violet-blue, smoky gray-blue, and golden brown\/yellow\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\t•\tCondition: Rough, natural, facet-grade zone visible\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\t•\tOrigin (likely): India \u003c\/b\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cb\u003enot all Iolite shows this vividly.\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eOnly high-grade rough with proper orientation and clarity reveals strong trichroism (three-color shift). Most commercial pieces appear flat blue or dull gray. The intensity and purity of the violet-to-golden shift make your piece exceptional for its size and state.\u003c\/b\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cb\u003eThis is collector quality — both for gem cutters and mineral enthusiasts.\u003c\/b\u003e\u003c\/p\u003e\u003cbr\u003e","brand":"GemRockz","offers":[{"title":"Default Title","offer_id":47378180899003,"sku":"EB-267439114885","price":82.49,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/7625\/5565\/files\/57_655f3438-7e97-4182-bb2d-d5cb16e0d9cc.jpg?v=1768767929","url":"https:\/\/gemrockz.org\/products\/3-7g-iolite-rough-trichroic-facet-grade-gemstone-pleochroic-crystal-specimen","provider":"GemRockz","version":"1.0","type":"link"}