**Product Description: Portable Diamond Tester with Metal Alert** - **Lightweight and Compact Design**: This diamond tester is designed to be as convenient as a credit card, making it lightweight and compact for easy portability. Whether you're at home or on the go, this tool is easy to carry and fits effortlessly into your pocket or bag. - **Real Diamond Indication**: The tester features a clear and straightforward identification process. Real diamonds are confirmed with a red LED light and an accompanying sound, providing immediate and reliable feedback. - **Accurate and Reliable Results**: Enjoy peace of mind with accurate and reliable test results that are easy to read. The tester's intuitive design ensures that both professionals and enthusiasts can use it with confidence. - **No Reaction to Fake Diamonds**: If the diamond is not genuine, the tester will show no reaction, allowing you to quickly distinguish between real and fake stones without any confusion. - **Metal Alert Function**: Equipped with a metal alert feature, the tester emits a continuous buzzing sound if it accidentally touches metal. This function helps prevent false readings and ensures precise testing. Enhance your gemstone verification process with this portable diamond tester, offering precision, convenience, and advanced features to ensure accurate identification of real diamonds. Perfect for jewelers, appraisers, and diamond enthusiasts alike.