Portable and User-Friendly: Lightweight, compact, and battery-powered, this handheld device fits easily into your pocket, ideal for jewelers, collectors, and field inspections. Precision Performance: Features an advanced imported chip for accurate readings, quick response time, and reliable performance in temperatures between 5–35°C with humidity below 80%. Smart Indicator Lighting: Equipped with a bright LED scale that lights up according to the stone's authenticity-nine or more lights and a beep confirm a real diamond. Advanced Thermal Conductivity: Utilizes professional-grade thermal conductivity measurement to accurately identify genuine diamonds based on their unique heat transfer properties. Non-Destructive Testing: Designed for safe use, the tester analyzes gemstones without causing damage, preserving the quality and integrity of your jewelry pieces., Weight: 0.330693393 pounds, Manufacturer: Grtheenumb_A95_5621943