Weigh your gold, silver, beads, gemstones, and even diamonds (and more!) on the DigiWeigh 100AX electronic jewelry balance. This scale allows you to choose from four (4) different modes: Grams (g), Carats (ct), Ounces (oz), and Grains (gr/gn). Capacity/Accuracy: 100/0.01 g, 3.527/0.0005 oz, 500/0.05 ct, 1542.8/0.2 gr. Sealed PuriTEST pack contains six (6) bottles test solution; each bottle contains 1/2 fluid oz (0.5 fl oz) test acid. With this box you will receive one 10k solution, one 14k solution, one 18k solution, one 22k solution, one Silver solution, and one Platinum solution--each new in box sealed with shrink-wrap. Test stone and files are brand new, and will last many uses. Test stone will not damage the jewelry/coin you wish to test. Use files for filing edges & ends, or use to cut into bars & other pieces before melting/molding to find out if they're truly solid. PuriTEST magnifying loupe magnifies up to 30x magnification; high-quality optical glass. Very easy to use & includes instructions.