PRO-D 3® Diamond Tester

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PRO-D 3® Diamond Tester

Identifies, Detects and Separates Diamond or Moissanite from CZ

The engineers at GemOro Superior Instruments have developed an enhanced version of their second generation PRO-D II simultaneous diamond and white sapphire tester.  The newest 3rd generation PRO-D 3 tester design is even sleeker and more ergonomic and has even better testing sensitivity than before.  Known for their accuracy and reliability, GemOro sets the standard for protection against diamond simulant fraud! PATENTED.



Item # 0775 Category:


  • Sleek ergonomic shape comfortably rests in and on your hand when held
  • Intuitive finger grip pads for increased user-friendliness and ease of use
  • Precision retractable probe-tip with enhanced durability
  • Durable ABS housing covered with GemOro’s exclusive rubberized paint that provides an even superior grip
  • Fast warm-up time
  • Glowing light pipe / probe tip cone / ring tone for quick stone identification  GREEN = Diamond, PINK = Sapphire, RED = Metal Alert
  • Bright white LED stone illuminator light
  • Powered by micro-USB or with its included 3 AAA rechargeable NiMH batteries (user may substitute 3 AAA alkaline batteries if desired)
  • Auto-off function if accidentally left on preserves battery life
  • May be used with optional GemOro UltraDock 3® battery charging stand accessory (Item #0772) and GemOro Test Stone Magnifier accessory (Item #0780)
  • Superior Surface Mount Technology (SMT)
  • Battery saving auto-off function
  • Designed in the USA
  • Two year probe tip warranty
  • Lifetime Limited Replacement Warranty on the tester

INCLUDES: NiMH rechargeable batteries, AC adapter/charger, loose stone holder, and compact rubberized portable storage case.

Click here to download the PRO-D 3 Manual