PRESIDIUM Synthetic Diamond Screener II Bedienungsanleitung Seite 19

Testing is performed under the lid of the Synthetic Diamond
Screener II where a testing area is marked by a hole in the center and
a protruding overhead UV light source (Fig 2.2). The stone is placed
covering this hole and testing begins when the lid is closed and the
"Start Test" button is pressed. Results will be displayed from the
adjacent light bars within 2 seconds upon testing.
Fig.2.2 The interior testing area inside the device
The following instructions will guide you through testing loose diamond
and mounted diamond.
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