PRESIDIUM Synthetic Ruby Identifier Manual Del Usuario página 29

High Reading
The last 3 bars fall within the High reading range and if any
measurements within this range is recorded, a red light will light up
within these 3 bars (Fig 3.3).
Low High
Low High Start Test
UV Transmittance
UV Transmittance
Fig.3.3 High Reading
A High reading with red light means the UV light transmittance ability
of the tested gemstone is high and the UV light can pass through the
tested gemstone to the Photo-detector easily. This could mean the
stone has a high UV transparency which is commonly a result of the
flame fusion creation process. The tested ruby is hence likely to be a
synthetic flame fusion ruby.
You can use the Synthetic Ruby Identifier to quickly sort through a
parcel of ruby stones and identify which ones are synthetic flame
fusion rubies.
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