- Special Function: Gold Testing Kit is used to verify the gold content in items, suitable for testing 10K, 14K, 18K, and 22K gold. - Testing Method: Jewelry gold tester; apply a drop of testing liquid on the stone. Real gold will remain unchanged on the stone, while fake gold may dissolve or discolor. - Easy to Use: Jewelry tester appraisal kit that changes color accordingly, making it very easy to use. - Wide Application: Gold testing equipment and practical jewelry-making accessory, ideal for testing jewelry, antique gold, and collections. - Package Included: Gold inspection kit containing 1 gold testing stone and 1 gold testing solution (3ml). Size Chart: Test solution: 3ml Test stone: 7.8cm x 4.3cm x 0.5cm / 3.07in x 1.69in x 0.20in Package Includes: 1 Gold Testing Stone 1 Gold Testing Solution (3ml) Note: Please allow slight variations due to manual measurement and differences in display monitors.