Professional Diamond Selector II with LED, Diamond Indicator, Test Pen for Selecting Jewelry, Gemstones, Crystals and Jade, High Precision.

Features: 1. Practical Mini Diamond Tester II for distinguishing between real and fake diamonds. 2. Designed for quick, easy, and accurate identification of diamonds without damaging them. 3. Portable electronic diamond tester for testing diamonds, crystals, jade, gemstones, etc. 4. Emits beeps to help you distinguish between real and fake diamonds. 5. LCD display and LED indicators provide accurate readings. Specifications: Features: Practical Mini Diamond Tester II for testing real and fake diamonds. Designed for quick, easy, and accurate testing of diamonds without damaging them. Portable electronic diamond tester for testing diamonds, crystals, jade, gemstones, etc. Emits beeps to help you distinguish between real and fake diamonds. LCD display and LED indicators provide accurate readings. Specifications: Power supply: 1 x 9V battery (not included) Material: Alloy, plastic Color: Black Product weight: 66g Package weight: 130g Product dimensions: 16 x 4 x 2.3cm Note: 1. The thermal conductivity meter is an electronic instrument specifically designed and manufactured to determine the thermal conductivity of diamonds in order to verify their authenticity. 2. This testing device is a precision instrument. The operating temperature should be between 5 and 35°C and the relative humidity should be less than 80%. 3. The diamond to be tested should be clean, dry and at room temperature. Package contents: 1 x Diamond Tester, 1 x Leather Case, 1 x Test Platform, 1 x User Manual