Gold testing kits includes tests stone and acid for accurate gold jewelry authentication, helping identify purity levels. Simply rub jewelry on the tests stone and apply testing acid to observe immediate chemical reaction, designed for both beginners and professional jewelers. Specially formulated testing liquid provides quick visual results within seconds, eliminating complicated procedures for efficient purity verification. Effectively tests various gold values including 18K, 22K and 24K, ensuring complete understanding of your jewelry's composition and value. Package includes: Gold Testing /Stone× 1