GEM
ORO CZ MASTER SET PRO3
®
10
GRADING DIAMOND COLOR OR
FLUORESCENCE
1. To color grade a diamond, simply place
it in the middle of the grooved tray,
positioned with the table (flat part of the
stone) down at a 45° angle while laying
the table of the stone against the front of
the groove.
2. For best results, it is recommended to
turn off or dim the overhead lights in
the room you are in. Turn on the cases
natural daylight LED’s when color
grading or UV LED’s when grading
fluorescence.
3. By process of elimination, lay the master
stones next to the diamond until you are
able to visually match the color to the
diamond.
4. Store the CZ Master Set Pro 3 in its
leatherette pouch with the lid closed in a
climate-controlled room. Never expose
it to extreme heat and/or UV radiation.
DAYLIGHT
UV