Updated: Jun 24
Welcome to my first official review of Presidium Instruments since the announcement of our collaboration in early May 2022. (LINK TO BLOG)
I’ve been using the Presidium Gem Computer Gauge tool since January 2021. I purchased it when I was towards the end of my study with the GIA - Diamond & Diamond Grading Diploma 2021. I used an affordable alternative gauge that did the job, but it was missing accuracy, and I couldn’t measure mounted stones. After extensive research (I research a lot before purchasing something), one company kept popping up on top of the search pages—the Presidium Instruments Pte. After purchasing the tool and quickly testing it on a few of my GIA Graded Diamonds, the measurements were as accurate as they could be.
What is the Presidium Gem Computer Gauge tool used for?
Presidium Gem Computer Gauge measures the dimensions and estimates the weight of loose and mounted gemstones with precision, speed, and ease.
Measures from 0.0 to 25.0mm
Accuracy: 0.01mm / Tolerance: 0.02mm
Digital millimetre/carat display
Automatically shut off when idle for 10 minutes
Auto-magnetic shut-off when placed in carrying case
Computer interface display with USB connectivity
Attachment for high setting jewellery provided
Specific Gravity (S.G.) dictionary for quick and easy reference included
I’ve been working with an independent jeweller for a few years, and I use the gauge daily. From measuring a client’s diamond; to checking the width of a wedding band, you can use the Gem Gauge on pretty much anything up to the width of 25.00 mm.
PGCG Image Gallery
Who can benefit from using this tool?
Diamond & Gemstone Graders
And anyone that is a bit of a Gemmology Obsessed 😊
Why This Gauge?
Presidium Gem Computer Gauge (PGCG) is the only gauge in the industry that can give a direct estimation of the weight of various gemstones of a range of 9 popular cuts, giving users the convenience of not having to dismount their gemstones from its jewellery settings.
Does it come with Software?
One of the many plusses is the Presidium PC Software
With PGCG’s computer interfacing, gemstone measurement records can be easily imported and printed. PGCG also comes with software that lists the S.G. value, R.I. value, and hardness measurements of 133 common gemstones in the market for handy reference.