اختبار، اختبار القلم عالي الدقة اختيار الأحجار الكريمة مجوهرات أداة اختبار وي حالة ل الخبراء المبتدئين

Good Material - It is made of solid durable ABS housing, high sensitivity alloy probe, rubber protective cap, well heat-conducting plate.
Fast & Precise Measurement - A quick, accurate, safe way to distinguish diamond from the simulants, brings no harm to the diamond.
Easy Use - Turn on, wait for heating up ready, hold(finger on heat-conducting plate), use the probe to make 90-degree contact with the measured object.
Intuitive Design - Sound beep and LED lights straightforwardly indicates test result(beep & light: diamond, continuous buzzing sound: metal, no signs: simulants).
Portable Size & Leather Bag - compact, lightweight diamond tester, powered by 1 x 9V 006p battery, comes with a leather case, for easy store, carry.