Presidium Synthetic Diamond Screener I

  Gesswein products are occasionally returned from trade shows, exhibitions or demonstrations with minor scratches, dents or other superficial damage not related to product performance. We make these products available to our customers and ensure they are tested completely prior to offering. Every used item we sell is sold "As Is" with Gesswein’s 60 Day Warranty, All Sales Final!
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Was Originally $599.00


Item is used but in fully working condition. May have minor cosmetic blemishes such as scratches, stains, or dents.

Identifies synthetic diamonds within 6 seconds!

The Presidium Synthetic Diamond Screener can be used with almost any cut of diamond – loose or mounted (open back) stones. Tests best on 0.1 to 10 Carats.

UV light absorption is used to provide accurate testing. Two color-coded light bars provide a low or high reading of UV light absorption. The blue light indicates a Natural Diamond and the red light indicates a Type II colorless diamond, likely to be synthetic. Measures 5.12"L x 3.94"W x 2.56"H. Made in Singapore. 

The user is cautioned against using the synthetic Diamond Screener on the following as it may affect the accuracy of the readings:
Stones that are more than 6mm in height; diamonds of colors other than colorless D to J; testing on other forms of diamond stimulants such as moissanite, cubic zirconia, etc.


  • Advanced UV light transmittance measurement technology
  • 2 color coded indicator light (blue/red) bars to give a low or high reading of UV light absorption with blue light indicating Natural Diamond and red light indicating Synthetic (Lab-Grown) Diamonds
  • Clear results within 6 seconds
  • Exterior base foam padding ensures non-slip sturdiness
  • Streamlined ergonomic design that enhances portability and stability
  • Low-battery indicator, uses 4 AAA alkaline batteries (not included)
  • Energy saver auto power-off for entire unit and LED light source
  • Interior LED light source and testing area
  • USB port for alternative power source connection. 
  • USB cable and appropriate Presidium Universal USB Power Adaptor included.