For slightly more than the cost of a test acid kit, the ET-18 precisely determines gold karat values equal to or greater than 10K, 14K, and 18K. Pocket sized and battery operated with a full one year warranty.<br /><br />Find this tool at: http://www.jewelrytools.com/eurotool/jewelry-testing-supplies/RS-Mizar-ET-18-Gold-Tester.html<br /><br />Find more at http://www.jewelrytools.com
