{"product_id":"gems-10x-18mm-triplet-loupe-black-riveted","title":"GEMS 10X 18mm Triplet Loupe-Black","description":"\u003cp\u003eThe GEMS 10X 18mm Triplet Loupe is a professional-grade magnification tool built for jewelers, gemologists, and appraisers who demand accuracy and durability. Unlike most jeweler's loupes on the market, this loupe is manufactured in Taiwan, with lenses crafted in Japan from the highest quality optical glass — not sourced from lower-cost production regions where quality control is less consistent.\u003c\/p\u003e\u003cp\u003eThe triplet lens design is corrected for both spherical and chromatic aberrations. Spherical correction minimizes edge distortion, while chromatic correction eliminates the color fringing commonly found in uncorrected loupes. The result is a sharp, true-color view across the entire field — critical for accurate diamond color and clarity grading.\u003c\/p\u003e\u003cp\u003eThe black case is riveted rather than screwed together, a meaningful distinction. Riveted construction maintains consistent tension over time, while screw-based cases can loosen, become floppy, and eventually fail — a common issue with lower-quality loupes. The GEMS riveted case is built to hold its tension indefinitely.\u003c\/p\u003e\u003cp\u003eIn gemological practice, the 10X triplet is the standard for diamond grading. Per industry convention, if a flaw is not visible under 10X magnification, it does not factor into clarity grading. Higher-power loupes, while available, are rarely used in gemology due to their extremely narrow depth of focus, making the 10X the practical and professional choice.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufactured in Taiwan for consistent quality control\u003c\/li\u003e\n\u003cli\u003eLenses made in Japan from high-quality optical glass\u003c\/li\u003e\n\u003cli\u003eTriplet lens corrected for spherical aberration (edge distortion) and chromatic aberration (color fringing)\u003c\/li\u003e\n\u003cli\u003eRiveted black case maintains tension indefinitely — no loose screws or floppy hinges\u003c\/li\u003e\n\u003cli\u003e10X magnification — the industry standard for diamond color and clarity grading\u003c\/li\u003e\n\u003cli\u003e18mm lens diameter for a wide, usable field of view\u003c\/li\u003e\n\u003cli\u003eIncludes soft storage pouch and nylon lanyard\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnification\u003c\/th\u003e\n\u003ctd\u003e10X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Diameter\u003c\/th\u003e\n\u003ctd\u003e18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Type\u003c\/th\u003e\n\u003ctd\u003eTriplet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAberration Correction\u003c\/th\u003e\n\u003ctd\u003eSpherical and chromatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLens Origin\u003c\/th\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCase Construction\u003c\/th\u003e\n\u003ctd\u003eRiveted (black)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturing Origin\u003c\/th\u003e\n\u003ctd\u003eTaiwan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGEMS 10X 18mm Triplet Loupe (black case)\u003c\/li\u003e\n\u003cli\u003eSoft storage pouch\u003c\/li\u003e\n\u003cli\u003eNylon lanyard\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003e10X triplet loupes are the accepted standard for diamond color and clarity grading in the gemological industry. Higher-power loupes are generally impractical for gemological use due to their extremely limited depth of focus.\u003c\/p\u003e","brand":"Ikohe","offers":[{"title":"Default Title","offer_id":43583427674326,"sku":"129.640","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/gems-10x-18mm-triplet-loupe-black-otto-frei.jpg?v=1719956659","url":"https:\/\/www.ottofrei.com\/products\/gems-10x-18mm-triplet-loupe-black-riveted","provider":"Otto Frei","version":"1.0","type":"link"}