Features:

Easy to use even for a new beginner
Emit audible sounds to give accurate reading
Diamond indicator will be showed if the stone is a REAL diamond (Green light)
Metal alert (continuous buzzing sound when user accidentally touches metal rather
than stone )
Large / small switch for testing diamonds +/ - 8 points
To emit sounds to give accurate reading
LCD display & LED indicator
If stone is Fake crystal, a simulant such as cubic zirconium ( CZ ), will be no reaction
Operating methods:
open the power, the power indicator light, instrument began preheating, after a
few seconds instrument can be used.*Take the naked drill will be testedinto
support tray appropriate sunken hole, and its mesa upwards. Those already inlay,
need not put tray hole in ,you can using handheld its.*according to the weight
of the tested diamonds and measuring the temperature place move bright several
leds.*take down needle sheath, handheld instruments, the forefinger of conductive
plate; touch instrument back cover That probe vertically and measured true
diamond mesa gently contact.*carefully watching instrument, if the rest of the
emitting diode light reflect yellow, when light to nine diode, accompany beeping
this explains those tested for a real diamond. By contrast, if lit, and
insufficient nine instrument does not send feng chirp, explain fake diamond or ape.

Specification:

Dimension: 16.5 x 4.2 x 2.2cm
Powered by DC 9V battery x 1 ( included )
Weight: 155g(including battery)
Package Weight: 170g
Original box: YES
Color: Black
9V Battery Not include

Packing content:
1 x Diamond selector II tester
1 x Protected leather bag