The Gemtone All-in-One Jewelry Testing & Appraisal Kit provides the essential tools for evaluating gold, silver, platinum, and diamonds. This comprehensive 14-piece set includes professional-grade JSP acid solutions, a GTE digital scale, GTE diamond tester, and accessories designed for reliable testing. Using the included large 2''x4'' touchstone, simply apply a small scratch from your jewelry and place a drop of the appropriate testing solution. The test solution reaction helps indicate the karat or type of metal. 1/2 oz neutralizing solution included to clean test stone between uses. The portable diamond tester identifies diamonds by measuring heat conductivity, helping to distinguish them from common simulants. This kit also comes with a 30X triplet magnifier for detailed inspection, a 10-piece needle file set, a digital scale with 0.01 g accuracy, and reference bars for practice. All components are compact and easy to use, making this a practical kit for jewelers, collectors, or hobbyists.