Portable Diamond Gem Tester Selector with Case Gemstone Platform Jewelry Measuring Tools

Feature: - Offer 2 sounds and 3 color lamps display system to identify diamonds from imitations. -?Simple calibration for stones of various sizes. -?Metal alert. -?LED light and audio result indication. -?Auto shut-off. -?Fine workmanship and good performance. -?Accurate and reliable. -?Easy to use. -?Convenient to carry. -?Durable in use. ? Specification: -?Auto Off: N/A -?Initial Warm-up: ~ 20 sec. -?Indicator: Audio and LED lamps -?Testing Capability: Diamonds, Diamond simulation (e.g. CZ), Metal -?Power Supply: 1 x DC006P 9V Battery (not included) ? Package included: 1 x Diamond Tester