The fluorescent reaction of diamond and assistance of the judgment, color grading, artistic stone arrangement, etc.

FEATURES
There are many natural diamonds which will give off a distinctive
glowing blue coloration under long-wave UV light. Some brown or
green natural diamonds will emit green or orange color under the light.
UV PEN LIGHT can judge such characteristics instantly and it is
useful for judging color stones.

APPLICATIONS
The fluorescent reaction of diamond. The assistance of the judgment,
color grading, artistic stone arrangement, etc.
The assistance the judgment on gemstones which will give off a distinctive
coloration under long-wave UV light.
Ex) Natural ruby from Union of Myanmar, opal, amber, synthetic ruby, YAG,
synthetic spinel, synthetic sapphire, a part of opals, etc.