{"product_id":"real-instruments-gem-refractometer-1-30-1-81-ri-gemstone-tester-rhg-181","title":"Real Instruments Gem Refractometer 1.30–1.81 RI for Gemstone Testing","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe \u003cstrong\u003eReal Instruments Gem Refractometer (RHG-181)\u003c\/strong\u003e is a precision optical instrument designed for accurate \u003cstrong\u003erefractive index (RI)\u003c\/strong\u003e measurement of gemstones and precious stones. With a \u003cstrong\u003e1.30–1.81 RI measuring range\u003c\/strong\u003e, it helps identify gemstones quickly and reliably for professional gemological analysis. Its durable ABS housing, high-quality optical components, and compact portable design make it suitable for jewelry stores, gemstone laboratories, educational institutes, and quality inspection applications.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eLearn more in our blog:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/measurekart.com\/blogs\/knowledge-base\/10-industries-that-use-refractometers-for-quality-control-in-2026\" target=\"_blank\" title=\"10 Industries That Use Refractometers for Quality Control in 2026\" rel=\"noopener\"\u003e10 Industries That Use Refractometers for Quality Control in 2026\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eKey Features\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRefractive Index (RI) measurement range \u003cstrong\u003e1.30–1.81\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh-precision gemstone identification\u003c\/li\u003e\n\u003cli\u003ePremium optical viewing system\u003c\/li\u003e\n\u003cli\u003eDurable ABS body construction\u003c\/li\u003e\n\u003cli\u003eCompact and portable design\u003c\/li\u003e\n\u003cli\u003eFast and accurate gemstone testing\u003c\/li\u003e\n\u003cli\u003eClear optical scale for easy reading\u003c\/li\u003e\n\u003cli\u003eSuitable for professional and laboratory use\u003c\/li\u003e\n\u003cli\u003eLow maintenance operation\u003c\/li\u003e\n\u003cli\u003eReliable and repeatable measurement results\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eApplications\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGemstone Identification\u003c\/li\u003e\n\u003cli\u003eJewelry Manufacturing\u003c\/li\u003e\n\u003cli\u003eJewelry Retail Stores\u003c\/li\u003e\n\u003cli\u003eGemological Laboratories\u003c\/li\u003e\n\u003cli\u003eDiamond \u0026amp; Precious Stone Inspection\u003c\/li\u003e\n\u003cli\u003eGold \u0026amp; Silver Jewelry Testing\u003c\/li\u003e\n\u003cli\u003eEducational Institutes\u003c\/li\u003e\n\u003cli\u003eQuality Control Laboratories\u003c\/li\u003e\n\u003cli\u003eGem Dealers \u0026amp; Traders\u003c\/li\u003e\n\u003cli\u003eResearch Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eSpecifications\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eReal Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRHG-181\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eGem Refractometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefractive Index Range\u003c\/td\u003e\n\u003ctd\u003e1.30–1.81 RI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eOptical Viewing Scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eABS Housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Method\u003c\/td\u003e\n\u003ctd\u003eOptical Refractive Index Measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePortability\u003c\/td\u003e\n\u003ctd\u003eHandheld \/ Portable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eGemstone \u0026amp; Jewelry Identification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eNot Required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 class=\"PDq2pG_selectionAnchorContainer\"\u003eRelated Products\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGem Refractometer\u003c\/li\u003e\n\u003cli\u003eBrix Refractometer\u003c\/li\u003e\n\u003cli\u003eHoney Refractometer\u003c\/li\u003e\n\u003cli\u003eAlcohol Refractometer\u003c\/li\u003e\n\u003cli\u003eSalinity Refractometer\u003c\/li\u003e\n\u003cli\u003eDigital Refractometer\u003c\/li\u003e\n\u003cli\u003ePolarizing Loupe\u003c\/li\u003e\n\u003cli\u003eJewelry Magnifying Glass\u003c\/li\u003e\n\u003cli\u003eDiamond Tester\u003c\/li\u003e\n\u003cli\u003eGemstone Testing Instruments\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"True Sense Technologies","offers":[{"title":"Default Title","offer_id":45574345097446,"sku":"RHG-181","price":8690.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/2748\/1062\/files\/1_12dbe188-a5eb-4e82-850a-637017ef3816.jpg?v=1737980206","url":"https:\/\/measurekart.com\/products\/real-instruments-gem-refractometer-1-30-1-81-ri-gemstone-tester-rhg-181","provider":"Measurekart.com","version":"1.0","type":"link"}