Presidium Synthetic Diamond Screener II SDS

Synthetic Diamond Screener Presidium


Presidium Synthetic Diamond Screener II SDS - Identifies Synthetic (Lab-Grown) Diamonds including Mounted Diamonds through its low UV absorption

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Identifies Synthetic (Lab-Grown) Diamonds including Mounted Diamonds through its low UV absorption

The Synthetic Diamond Screener is developed to help screen out Type IIa colorless diamond, which is likely to be synthetic and created through chemical vapor deposition (CVD) or high pressure high temperature (HPHT) syntheses, from the natural Type Ia colorless diamond.

When subjectedto this deep UV irradiation, Type Ia and Type IIa diamonds each absorb different amount of UV light. Type IIa diamonds allow more deep UV light to pass through and thus its UV light absorption ability is low. This difference in the light absorption is significant enough to aid in differentiating between colorless Type Ia and Type IIa diamonds.

Works on both mounted (with open-back setting) and loose diamonds.

Can be powered by 4 AAA batteries for product mobility or through its USB port connected to external power source.


  • Advanced technology that measures a diamond's UV light transmittance ability
  • 2 colour coded (blue/red) indicator light bars to give a low or high reading of UV light absorption with blue light indicating Natural Diamond and red light indicating Type IIa Diamond
  • Instantaneous clear results within 2 seconds
  • Exterior base foam padding to ensure non-slip sturdiness and prevent scratches to surfaces
  • Stream-lined ergonomic design that enhances portability and stability
  • Low battery indicator
  • Energy-saving auto power-off of device after 10 minutes without operation
  • Interior LED light source and testing area
  • Energy-saving auto power-off of interior LED light source when lid of device is open or when Start Test button is not activated
  • Power connectivity via 4xAAA batteries or via Universal Multi Adaptor connected through USB

(Click to Enlarge Image)
Safe UV light source and enclosed testing area within device (Click to Enlarge Image)
Works on loose and mounted diamonds

Dimensions and Weight

  • Length: 130mm (5.12 inches)
  • Width: 100mm (3.94 inches)
  • Height: 65mm (2.56 inches)
  • Weight without batteries: 210g


  • Help to screen out Type IIa diamonds likely to be synthetic diamonds
  • Tests on diamonds within a range in dimension from 1.5 mm in width and up to 6mm in height (approx. 0.02 to 10 carat size)
  • Tests on polished diamonds of popular cuts such as brillaint round cut, emerald cut, baguette cut, etc
  • Can be used on both loose and mounted diamonds (on jewelry with open-back setting)
  • For use on colorless diamonds from Color D up to Color J

Power and Battery

  • 4 x AAA batteries
  • Presidium Universal Power Adaptor (standard item provided by Presidium)

Package Contents

  • Synthetic Diamond Screener device
  • Protective and durable carrying case with interior pouch for gemstones and accessories
  • USB Cable
  • Presidium Universal Power Adaptor
  • User Handbook
  • Warranty Card



Specific References

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