Learn about the Presidium Gem Tester and whether it can distinguish real vs fake jade jewelry.

*QUICK NOTES*

• The PGT II in this video was brand new, properly calibrated, and used correctly (the probe was depressed fully) with a clean probe according to manufacturer's instructions. The gems were adjusted to the room's temperature and held still, most gems having been previously tested in a gemological lab (the only exception being some nephrite pieces.) The reading was taken when the needle stopped moving, with consideration given to the needle's highest point.

• While some of the readings were accurate, the PGT II misidentified common jade simulants (aventurine and agate) as jadeite. The PGT II also misidentified nephrite as jadeite. The PGT II did not give a clear reading on multiple jadeite jade and quartz pieces. This is especially important because quartz is the most common simulant of jadeite jade.

• While the readings of the serpentine and Maw Sit Sit specimens are interesting, in my professional opinion I don't think these give an accurate view of the tester's ability -- as it's honestly pretty unfair to test gems that aren't on the gem identification display. I literally only included it because I thought it was interesting.

• This video is not meant to disparage Presidium. It is an honest review where I show you exactly what I tested and what results I got. As mentioned in the video, perhaps the PGT II is better used on faceted gemstones. However, as with any gemological instrument, it's not enough on it's own to conclusively identify any gemstone. Other testing, as well as visual examination and experience, are needed for proper gem identification.

• If you're looking to have your jade professionally tested (as there are no reliable ways to conclusively test jade at home if you don't have experience with the stone), consider visiting your local independent jeweler. If you want to have your jadeite jade tested for the presence of polymer-impregnation, you or your jewelry store can send your stone to Mason-Kay.
https://masonkay.com/jadeite-services...

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*AUDIO*
1-
"Tropical" by Infraction and OddVision Media
https://bit.ly/42wj3qp
Music promoted by Inaudio: http://bit.ly/3qxoX6U
2-
Joyful Electronic No Copyright Free Chill Upbeat Background Music for Vlog - 'Mwah' by LiQWYD
   • 💋 Joyful Electronic No Copyright Free...  
3-
Good Vibes Music by MBB
   / mbbmusic  
@mbbmusic
https://spoti.fi/2wqzjwK

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*RELATED VIDEOS*
'A Jade' vs 'B Jade' -    • Real Vs Fake Jade | How to Tell the D...  
Common Jade Simulants -    • How to Identify Real Jade vs Fake Jad...  
Identify Rough Jade -    • Identify Rough JADE (and it's simulan...  
Can the Rock ID App Identify Jade? -    • Can the Rock ID App Identify Jade and...  
*AT-HOME JADE TESTS DEBUNKED*
Real Vs Fake Jade DEEP DIVE - https://youtube.com/live/dxAJeUUGPcE
The Ping Test -    • Testing Jade Bangles Using Sound | Do...  

*TIMESTAMPS*
0:24 How Gemologists Identify Gemstones
2:02 Testing Aventurine
2:51 Testing Agate
4:17 Treated Jade
6:17 Testing Nephrite
7:14 Refractometer
8:55 How to Test Jade

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Jewels of the Trade is an affiliate marketer for Mason-Kay Jade.

Using our discount codes and affiliate links helps us tremendously so that we can keep creating content to help jewelry shoppers and professionals!

*Buy NATURAL, untreated jadeite jade jewelry*
Visit your local, independent jeweler!
If your local jeweler doesn’t carry jade, you can shop with Mason-Kay directly–
https://www.mkjadejewelry.com/?utm_so...
Discount Code: JOTT
for 10% off + 20% off for first-time customers

*Want to sell your jade?*
Sell Polished Jade - https://masonkay.com/sellyourjade
Sell Rough Jade - send photos to [email protected]

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Shop with me on WhatNot: https://www.whatnot.com/user/jewels_o...

*JOIN THE DISCORD*
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The JOTT Discord Community is a forum for sharing accurate jade information, as well as a way to connect with fellow jade lovers and promote American jade carving. Join to ask questions about jade and see images of jade categorized by origin, type, etc to improve your jade identification.