{"title":"Farbwechsel-Saphire mit GIA-Gutachten – natürliche, laborgeprüfte Steine","description":"\u003cp\u003eDer Farbwechsel-Saphir gehört zu den selteneren Launen der Natur: ein Stein, dessen Farbe sich je nach Lichtquelle verändert – bei Tageslicht oder Leuchtstofflicht wirkt er meist blauviolett bis gräulich violett, unter Glühlampenlicht verschiebt sich die Farbe zu einem rötlichen Violett. Diese Kollektion beschränkt diese ohnehin knappe Kategorie auf die Steine mit unabhängiger Dokumentation – jedes Stück wird mit einem GIA-Identifikations- oder Herkunftsgutachten geliefert, das den Stein als natürlichen Korund ausweist.\u003c\/p\u003e\n\n\u003ch2\u003eWarum Farbwechsel-Saphire mit GIA-Gutachten\u003c\/h2\u003e\n\n\u003cp\u003eDer Farbwechsel entsteht durch Spuren von Vanadium und Chrom, die mit verschiedenen Lichtspektren unterschiedlich zusammenwirken, und er ist so selten, dass Fehlbestimmungen (oder Verwechslungen mit einfach farbzonierten Steinen) im Handel häufig vorkommen. Ein GIA-Gutachten weist den Stein als natürlichen Korund aus, dokumentiert das beobachtete Farbverhalten, gibt an, ob der Stein erhitzt wurde, und enthält bei vielen Steinen eine Herkunftseinschätzung als Expertenmeinung.\u003c\/p\u003e\n\n\u003ch2\u003eWas Sie erwarten können\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDer Farbwechsel.\u003c\/strong\u003e Achten Sie auf einen klaren, deutlichen Wechsel zwischen den Lichtquellen statt eines bloß feinen Tonunterschieds – je ausgeprägter und gleichmäßiger der Wechsel, desto begehrter der Stein. Fragen Sie uns nach Fotos und Videos des Steins, die Sie interessieren.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eBehandlung.\u003c\/strong\u003e Die Farbwechsel-Saphire dieser Kollektion sind überwiegend unerhitzt, da eine Behandlung das Phänomen beeinflussen kann; der Befund zur Erhitzung steht im GIA-Gutachten und auf jeder Produktseite.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGutachten.\u003c\/strong\u003e Jeder Stein hier hat ein GIA-Gutachten; das ausstellende Labor und die Gutachtennummer stehen auf der Produktseite.\u003c\/p\u003e\n\n\u003ch2\u003eWeitere Phänomensaphire entdecken\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/de\/collections\/color-change-sapphire\"\u003eAlle Farbwechsel-Saphire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/collections\/natural-star-sapphires-six-ray-asterism-unheated-ceylon\"\u003eSternsaphire\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/collections\/gia-certified-stones\"\u003eAlle Steine mit GIA-Gutachten\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/collections\/all-sapphire-gemstones\"\u003eAlle Saphire (jede Farbe)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eMehr erfahren\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eWie Sie ein GIA-Saphirgutachten lesen\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eDer ultimative Saphir-Kaufratgeber\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/what-is-an-unheated-sapphire\"\u003eWas ist ein unerhitzter Saphir?\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eHaben Sie eine Frage zu einem bestimmten Gutachten oder möchten Sie Hilfe bei der Auswahl? Schreiben Sie an \u003ca href=\"mailto:crescentgems@gmail.com\"\u003ecrescentgems@gmail.com\u003c\/a\u003e – wir antworten persönlich innerhalb eines Werktags. Für jeden losen Stein gilt unser 14-tägiges Rückgaberecht. Ausgewählte Stücke sind für Kunden in den USA über unser \u003ca href=\"\/de\/collections\/try-before-you-buy-loose-gemstone\"\u003eTry-On-Programm\u003c\/a\u003e erhältlich; außerhalb der USA senden wir auf Anfrage ein persönliches Video. Kostenloser Versand innerhalb der USA bei jeder Bestellung.\u003c\/p\u003e","products":[{"product_id":"2-01-ct-color-change-sapphire-unheated-gia","title":"2.01 ct Natural Unheated Color-Change Sapphire – Cushion Cut | GIA Certified","description":"\u003cp\u003e2.01 carat rectangular cushion-cut color-change sapphire, natural and completely unheated, measuring 7.17 × 5.80 × 4.81 mm. The stone shifts from a saturated greenish-blue under daylight and fluorescent light to a clear purple under incandescent light — a well-defined two-color response that qualifies as a true color-change phenomenon. The shift is immediately visible when moving the stone between light sources. No heat treatment or any other enhancement of any kind; the color change is the stone's own natural property. Accompanied by GIA Report #1236949156 confirming natural origin, weight, dimensions, and unheated status.\u003c\/p\u003e\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"color: #4a235a; margin-top: 0;\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eExpert Opinion\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\"What makes this stone worth stopping for is the phenomenon itself,\" says Ahmed Shareek, gemologist at Crescent Gems. \"This is a true, well-defined color-change sapphire — a saturated greenish-blue in daylight or fluorescent light that shifts to a clear purple under incandescent light. That's not a subtle drift in tone; it's two distinct colors in one stone, and it's completely natural and unheated. Genuine color-change corundum with this strong a response is something you don't come across often.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue color-change phenomenon:\u003c\/strong\u003e Genuine color-change sapphire is rare in the gem market. The specific trace-element combination — typically vanadium — that produces a strong, well-defined two-color response in corundum under different light sources is uncommon; it's a much less frequent occurrence than the color-change effects seen in garnet or the classic alexandrite response in chrysoberyl.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength and clarity of the shift:\u003c\/strong\u003e This stone shows a well-defined two-color response, not a partial or muddy transition. A clean, unambiguous shift between greenish-blue and purple is itself a quality and rarity marker — many color-change stones on the market show only a faint or inconsistent shift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated and untreated:\u003c\/strong\u003e This sapphire has never been heated. Heat treatment can damage or alter the trace-element structure responsible for color change, so natural material that displays this phenomenon without any enhancement is especially valued.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClarity:\u003c\/strong\u003e Minor inclusions under 10× in our own assessment — an honest, eye-clean grade rather than a flawless one. We note this plainly rather than overselling it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndependent documentation:\u003c\/strong\u003e Accompanied by GIA Report #1236949156, confirming natural origin, weight, dimensions, and unheated status from an independent laboratory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined effect:\u003c\/strong\u003e A genuine, strongly defined color-change phenomenon in an unheated natural sapphire, backed by GIA documentation, places this stone in a distinctly small category of gemstones — most sapphires show no color-change effect at all, and those that do rarely display it this clearly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eView the stone under both daylight (or fluorescent) light and incandescent light before buying. The entire value of this gem lies in the shift itself, so confirm you like both the greenish-blue daylight color and the purple incandescent color — not just one of the two.\u003c\/li\u003e\n\u003cli\u003eVerify unheated, natural color-change status through an independent lab report rather than taking a listing's word for it. Color-change effects can sometimes be imitated, induced, or enhanced in lesser stones, so third-party confirmation matters here more than with a single-color sapphire.\u003c\/li\u003e\n\u003cli\u003eKeep in mind the origin listed, Madagascar, is seller-stated rather than explicitly confirmed on the GIA report, which documents natural origin, weight, dimensions, and unheated status but does not certify country of origin.\u003c\/li\u003e\n\u003cli\u003eJudge clarity honestly: in our own assessment this stone has minor inclusions under 10× — eye-clean beauty, not a flawless stone — and that distinction should factor into your expectations at this price point.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTry Before You Buy:\u003c\/strong\u003e Because this stone's entire appeal rests on the light-to-light transformation, we recommend examining it in person or under multiple lighting setups whenever possible, so you can be certain both color states work for you before committing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/color-change-sapphire-guide\"\u003eColor-Change Sapphire Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eWhat Is a GIA Sapphire Report and How Do You Read One?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/how-to-commission-custom-sapphire-ring\"\u003eCustom Sapphire Rings — The Complete Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/sapphire-buying-guide\"\u003eThe Ultimate Guide to Buying Natural Loose Sapphires\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/what-is-an-unheated-sapphire\"\u003eWhat Is an Unheated Sapphire? The Complete Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/madagascar-sapphire-guide\"\u003eMadagascar Sapphire — The Modern Origin That Rivals Ceylon\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/de\/blogs\/information-pages-complete-guide\/cushion-cut-sapphire-guide\"\u003eCushion Cut Sapphire — The Complete Guide to the Vintage Shape That Deepens Color\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 14px; color: #4a235a;\"\u003eGemstone Data — At a Glance\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 0.95em;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eItem #\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCG8355\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e2.01 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eSpecies \/ Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Color-Change Sapphire (Corundum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eShape \/ Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eRectangular Cushion, Mixed Brilliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e7.17 × 5.80 × 4.81 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eColor \/ Intensity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSaturated greenish-blue (daylight\/fluorescent) to purple (incandescent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eTrue color-change (greenish-blue to purple)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNone — unheated and untreated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eMadagascar — seller-stated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eMinor inclusions under 10× — our own assessment; GIA colored-stone reports carry no clarity grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTransparency\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9 (Mohs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Report #1236949156\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eSKU: CG8355\u003c\/li\u003e\n\u003cli\u003eCarat Weight: 2.01 carats\u003c\/li\u003e\n\u003cli\u003eVariety: Color-Change Sapphire\u003c\/li\u003e\n\u003cli\u003eShape: Rectangular Cushion\u003c\/li\u003e\n\u003cli\u003eCutting Style: Mixed Brilliant (brilliant crown, modified step cut pavilion)\u003c\/li\u003e\n\u003cli\u003eDimensions: 7.17 × 5.80 × 4.81 mm\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Color-Change Sapphire\u003c\/li\u003e\n\u003cli\u003eOrigin: Madagascar\u003c\/li\u003e\n\u003cli\u003eTreatment: None — unheated and untreated (no indications of heating)\u003c\/li\u003e\n\u003cli\u003eColor: Greenish-blue (daylight \/ fluorescent) to purple (incandescent)\u003c\/li\u003e\n\u003cli\u003eTransparency: Transparent\u003c\/li\u003e\n\u003cli\u003eClarity: Minor inclusions under 10× — our own assessment, not a GIA grade\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Report #1236949156\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eCare\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eClean with lukewarm water and mild soap using a soft brush\u003c\/li\u003e\n\u003cli\u003eStore separately to avoid surface contact\u003c\/li\u003e\n\u003cli\u003eRemove before heavy physical activity\u003c\/li\u003e\n\u003cli\u003eAvoid ultrasonic or steam cleaners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eOne of a Kind\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cp\u003eThis is a single natural gemstone, not a manufactured or lab-created replica — no two sapphires form with identical color, inclusions, and internal character, and true color-change stones like this one are especially uncommon. Once this stone sells, it's gone; there is no duplicate. What you see documented on the GIA report is the exact, individual stone you receive.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eWhat’s included with this Color-Change Sapphire\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGIA Report #1236949156\u003c\/li\u003e\n\u003cli\u003eGemstone packed in a gem sleeve\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42798903623747,"sku":"CG8355","price":2211.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/1112023001_96c376e1-d3a5-470f-affd-600dfa3a10c7.jpg?v=1778308039"}],"url":"https:\/\/crescentgems.com\/de\/collections\/gia-certified-color-change-sapphires.oembed","provider":"Crescent Gems","version":"1.0","type":"link"}