The Presidium Diamond-Mate-A Tester is an indispensable tool for professionals in the gemstone industry, offering unparalleled precision in distinguishing diamonds from their imitations through advanced thermal conductivity analysis. Key Features: High Precision: Utilizes thermal conductivity analysis to accurately identify diamonds. Audible and Visual Confirmation: Signals confirmation of diamond with sound and light; alarms for imitations. Portable Power Supply: Operates on 3x AAA batteries (not included), making it perfect for on-the-go use. Advantages: Durable Thermoelectric Probe: Ensures long-lasting and reliable testing. Ultra-Thin Probe: At only 0.6mm, it can test gemstones as small as 0.02ct, offering versatility in gem testing. Technical Specifications: Dimensions: 160 x 21 x 30 mm Weight: 45 g (without batteries) The Presidium Diamond-Mate-A Tester is a crucial asset for gemologists, jewelers, and anyone involved in the diamond industry, providing confidence in the authenticity of diamonds with ease and precision.