GemPen® Diamond Screener & Filter 4 - TG1000


GemPen® is a powerful portable gemmological instrument for today's jewellers & gemmologists. Providing the ability to screen diamonds for synthetics & treatments.

Screen diamonds with GemPen® Diamond Screener. GemPen® is a portable Diamond Verification Instrument that indicates natural, HPHT & CVD lab-created diamonds. Our instrument is ideal for jewellers and gemmologists and works on rough, polished and mounted stones, including those with closed backs. Quickly screen multiple stones of all shapes and sizes from 0.01ct to 10.00ct+

GemPen® Premium has all the the features of our Diamond Screener and also includes the additional Filters for the professionally trained gemmologist to screen rubies and sapphires for synthetics and treatments.

Includes GemPen® Diamond Screener and Filter 4

GemPen® Diamond Screener:

  • Diamond Verification Instrument
  • Indicates natural, HPHT & CVD lab-created diamonds with Filter 1 (included)
  • Indicates HPHT colour enhancement treatment on natural diamonds
  • Works on rough, polished & mounted diamonds
  • All diamond sizes: 0.01ct-10.00+
  • Diamond colour range:  D-M
  • Screens 100’s of stones in a matter of minutes
  • Full spectrum Xenon UV light source
  • USOF – Ultra Spectrum Optical Filtering technology
  • Upgradable by purchasing additional filters
  • Travel Case / Darkroom to check diamonds on the go
  • Portable pocket size / purse size design
  • Lithium-ion battery powered & USB rechargeable
  • Access to GemPen® Academy
  • Innovated by a Gemmologist for Gemmologists
  • Applications:  in the field, wholesale diamond buyers, gemmological labs & educational institutes, appraisal services providers, screening while shopping at trade shows & when receiving set goods, pawn shops, auction houses, jewellery repair & custom design houses, jewellers, all natural & lab created diamond retailers

GemPen® Diamond Screener is used to screen diamonds for natural, HPHT and CVD grown synthetics and includes Filter 1. It also gives indications on treatments such as HPHT treatment of natural diamonds.  It is possible to later upgrade your GemPen® Diamond Screener by buying the additional Filter Kit.

Filter 4: 

The LW Filter 4 (in combination with Filter 1 – Included with GemPen® Diamond Screener) helps the user to distinguish between a natural fluorescing diamond and a lab-created diamond.

20% VAT£351.00
Please note this product is excluded from any discounts or promotional offers.
Quantity per unit: 
Packaged weight: 
0.5 kg
Rate this product: 
Average: 5 (1 vote)


Prices displayed ex VAT. VAT (@ 20%) only applies to Great Britain & N.Ireland.