{"product_id":"refractometers-made-easy-9780990415237","title":"Refractometers Made Easy","description":"Explains in non-technical terms how to use the refractometer to identify diamonds and colored gems, and how to separate natural gems from imitations, treated gemstones, synthetics, and look-alikes. The approach is direct and practical, and its style is easy to understand. With this highly accessible guide booklet, anyone can begin to master gem identification using the refractometer.","brand":"Antoinette Matlins","offers":[{"title":"Default Title","offer_id":48305228382459,"sku":"9780990415237","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/3917\/9771\/files\/9780990415237_fa9d6003-8d39-4cd7-8621-8ceaaf259d46.jpg?v=1772483461","url":"https:\/\/indiepubs.com\/products\/refractometers-made-easy-9780990415237","provider":"IndiePubs","version":"1.0","type":"link"}