{"product_id":"refractometer","title":"Refractometer","description":"\u003cp\u003e\u003cspan\u003eA refractometer with in-built switchable light source is primarily used for measuring the refractive indices of faceted gemstones. It can also be used for testing cabochons, carvings and crystal faces (*with some training and experience - if you need this our courses will help 😉!) \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAlso to distinguish between gemstones of an optically isotropic (singly refractive) or anisotropic (doubly refractive) nature. This instrument is supplied with a removable polarising lens, USB cable, batteries and protective case. It is great for gemmology on the go.\u003c\/span\u003e\u003c\/p\u003e","brand":"Sachi","offers":[{"title":"Default Title","offer_id":57919594070390,"sku":"GIN020","price":295.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0412\/6795\/3821\/files\/20260527_125537_7701bee1-bdf2-4f38-9c03-294729cc2015.jpg?v=1779889754","url":"https:\/\/gemmologyrocks.com\/products\/refractometer","provider":"Gemmology Rocks","version":"1.0","type":"link"}