1) Easy to use even for a new beginner

2) Emit audible sounds to give an accurate reading

3) Diamond indicator will be shown if the stone is a REAL diamond (Green light)

4) Metal alert (continuous buzzing sound when user accidentally touches metal rather than stone )

5) Large / small switch for testing diamonds +/ - 8 points

6) To emit sounds to give accurate reading

7) LCD display & LED indicator

8) If stone is Fake crystal, a stimulant such as cubic zirconium (CZ), will be no reaction

9) Powered by DC 9V battery

10) Size: 164 x 42 x 22mm

11) Weight: 65g