Presidium Digital Computer LCD Screen Gem Gemstone Diamond Calculating Gauge

  • $ 319.00


Best Electronic Gemstone Gauge in the World just became much better - Easy digital readout, computes weight directly from the measurements!

The Presidium Gem Computer Gauge (PGCG) has been developed based on the existing Presidium Electronic Gemstone Gauge (PEGG) with additional features to perform more functions.

The new Presidium Gem Computer Gauge has a built-in computer program to estimate the weight of a wide variety of loose and mounted stones with high precision, consistency, speed, and ease. The gauge computes weight directly from the measurements taken or from data entered on its keypad. It also features a direct reading of carats for brilliant cut diamonds. It reads in mm with 0.01mm accuracy. It automatically shuts off when idle for 10 minutes and has a USB interface for connection to your PC.

The Presidium Gem Computer Gauge works with diamonds and virtually all gemstones used in jewelry today in many different shapes, such as round, oval, emerald, marquise, heart, pear, cushion, rectangular or cabochon.

The additional features include:

  • Specific Gravity (S.G.) dictionary of common stones
  • Assistance in calculating prices of gemstones
  • Estimate weight of gemstones
  • as Gemstone Estimator using S.G. values
  • CD with more gemstone values to extend built-in dictionary of values
  • USB interface to PC/laptop


  • measuring range: 0.00mm to 25.00mm or 0.000ct to 57.343ct
  • auto shut off after 10 minutes of inactivity
  • 0.01mm accuracy
  • recommended battery: CR 2450 3V or equivalent
  • battery life: about 80 hours of continuous use

Package includes:

  • Gauge
  • CR 2450 3v battery
  • Jewelry attachment (for measuring mounted stones)
  • User Manual
  • Carton and Protective Box
  • USB cable
  • CD Software

The Presidium Gem Computer Gauge (PGCG) comes with 12 month manufacturer's warranty.

We Also Recommend