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Offline Meggie

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Diamond Tester.
« on: February 10, 2012, 21:55 »
I recently bought one of these diamond testers from China off eBay.

Price was about $3 but the postage was a bit dearer.

It seems to work OK for me especially on the known good stones & rejects those that are obviously duds.

Anyone else used one ?

Meggie ...
  • Detector(s) owned/used: Minelab Etrac, 2 x Minelab Sovereign GT's, Tesoro : Silver µMax,Compadre,Cibola,DeLeon,Vaquero,Golden uMax,Sand Shark Stavr Scoop, Garrett Pro-Pointer
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Online Goodbeard

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Diamond Tester.
« Reply #1 on: February 10, 2012, 22:47 »
Got one of those a few months back.    Not sure how long it will work for but I use it quite a lot.  A pitty it has not yet been on a ring I found while detecting.
  • Detector(s) owned/used: CTX 3030 - Xtrerra 305 - Xterra 705 - Garret pro pointer - Tesoro Silver Umax - Garratt ACE 250
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Offline Adrian ss

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Re: Diamond Tester.
« Reply #2 on: February 11, 2012, 08:34 »
I am a Gemologist and have a couple of the Chinese testers as well as two reliable top line jobs.
Some of The Chinese testers are Ok but if you have one that requires you to adjust the display depending on the size of the stone  then they can be very unreliable and are worthy of being in File 13.
There is one that differentiates between moissanite, simulants and  diamond and so far it is proving to be reliable and fairly foolproof. This one will set you back about 20 bucks depending on seller.
Item number 170751106451

The Presidium Electronic Gem Gemstone Diamond Tester  will get you in the ball park but then you have to use a bit of gemmo knowledge to finish the ID process.
« Last Edit: August 02, 2014, 23:19 by Adrian ss »
  • Detector(s) owned/used: Sea Hunter MK II, Safari, SDC 2300, 6000DI SL ,BHID,ML Stirling,GS 15000, Sov XS, Lobo ST, relic M 7,Fisher 553D & 555D,CX4PI,Infinium,Spectrum XLT.6000D,6000DI S 3, Gold Spear, Scorpion, CXII & CXIII,Pro Scan,Some Home Built VLFs & PIs and some others.
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Offline lazyaussie

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Re: Diamond Tester.
« Reply #3 on: February 11, 2012, 09:47 »
I've got the same unit Meggie  :D  it  seems to work ok for me.
  • Detector(s) owned/used: garrett AT pro, garrett ace 250, garrett pro pointer, garrett sea hunter, whites dual field,
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Offline Adrian ss

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Re: Diamond Tester.
« Reply #4 on: February 11, 2012, 12:08 »
Just be wary if the tester requires that you adjust the LED display for the size of the stone.
A second hand outlet here in Canberra has been caught out a couple of times by using one of those type and were stuck with stones that turned out not to be diamond after having payed a price for jewellery based on the stones being ID as diamond by an inexspencive Chinese diamond tester. The testers work but the accuracy is dependent on the operator adjusting the tester correctly for the stone size. Errors are likely to occur for the smaller stones 10 pt and lower.

It is important to ID gemstones correctly and relying entirely on the indications from an electronic tester is not wise. Even with my top notch testers I will still look at a gemstone through a 10 power loupe or with a microscope. as well as use Spectroscopes, Dicroscope, Polariscope .

It is easier to be wrong than right with gem idents.
Look at the big red stone in the crown jewels; for ages it was believed without question to be a ruby but in the end turned out to be a red Spinel worth not a lot in comparason to it being a ruby.
« Last Edit: August 02, 2014, 23:23 by Adrian ss »
  • Detector(s) owned/used: Sea Hunter MK II, Safari, SDC 2300, 6000DI SL ,BHID,ML Stirling,GS 15000, Sov XS, Lobo ST, relic M 7,Fisher 553D & 555D,CX4PI,Infinium,Spectrum XLT.6000D,6000DI S 3, Gold Spear, Scorpion, CXII & CXIII,Pro Scan,Some Home Built VLFs & PIs and some others.
  • Oldest find: 1797 Cartwheel penny

Offline Smurf

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Re: Diamond Tester.
« Reply #5 on: February 11, 2012, 12:53 »
I use the older tester


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Offline Adrian ss

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Re: Diamond Tester.
« Reply #6 on: February 11, 2012, 13:59 »
Almost all items that are diamond simulants will cut glass.
  • Detector(s) owned/used: Sea Hunter MK II, Safari, SDC 2300, 6000DI SL ,BHID,ML Stirling,GS 15000, Sov XS, Lobo ST, relic M 7,Fisher 553D & 555D,CX4PI,Infinium,Spectrum XLT.6000D,6000DI S 3, Gold Spear, Scorpion, CXII & CXIII,Pro Scan,Some Home Built VLFs & PIs and some others.
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Offline lazyaussie

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Re: Diamond Tester.
« Reply #7 on: February 11, 2012, 20:17 »
I just use the tester to get a feel on a stone  ;D if i get a 18k ring setting 80% of the time the stone is real if it's 9k 80% of the time it's fake but it also depends how old the ring is & the quality of the setting.
but at the end of the day if it looks good I'll let a pro check it out  ;D.
lazy
  • Detector(s) owned/used: garrett AT pro, garrett ace 250, garrett pro pointer, garrett sea hunter, whites dual field,
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Offline Marty

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Re: Diamond Tester.
« Reply #8 on: February 17, 2014, 08:54 »
Just want to re-hash this thread

Some of us find diamond rings or at least we like to think we do  ;D

There are many testers on the market and since almost everything is a knock off and made to a price rather than the good old day were it was made to last , what is a good tester to go for ?

These look the goods but are they worth it
http://www.ebay.com.au/itm/281221242250
http://www.ebay.com.au/itm/230986370774
http://www.ebay.com.au/itm/120684976974
http://www.ebay.com.au/itm/231089707892
http://www.ebay.com.au/itm/like/350465494590


Do we have any Jewelers on the forum ? what do they use?

Marty
  • Detector(s) owned/used: Old -GP3000/3500, GPX 4000,4500, GB1 , GPX5000, current XTerra705 , ForsGold, CTX3030 , SDC2300 , GPZ7000
  • Oldest find: 1797 Cartwheel , 1806 & 07 George III half penny, 1823 & 25 Farthing , 1825 George IV Penny ,1876 20 Mark Gold German Wilhelm I, 1889 Queen Vic Jubilee Head Double Florin, 1937 Australian Crown, lost gold ring over 120yr ago, returned property owner
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Offline goldnugget01

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Re: Diamond Tester.
« Reply #9 on: February 17, 2014, 09:06 »
I have the original tester in the first post, hasn't let me down yet as long as you set it correctly for current temp and size. Cost me $20.
  • Detector(s) owned/used: ML Explorer SE - std DD coil & ML x-terra 70. Coils: std concentric, 10x5 18.75DD, 15" 18.75DD
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Offline Adrian ss

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Re: Diamond Tester.
« Reply #10 on: February 17, 2014, 13:18 »
Just want to re-hash this thread

Some of us find diamond rings or at least we like to think we do  ;D

There are many testers on the market and since almost everything is a knock off and made to a price rather than the good old day were it was made to last , what is a good tester to go for ?

These look the goods but are they worth it
http://www.ebay.com.au/itm/281221242250
http://www.ebay.com.au/itm/230986370774
http://www.ebay.com.au/itm/120684976974
http://www.ebay.com.au/itm/231089707892
http://www.ebay.com.au/itm/like/350465494590


Do we have any Jewelers on the forum ? what do they use?

Marty

1 and 2 are fine.3 is unreliable, 4 is fine 5 I don't know about.

I do have #3 but I tend not to trust it although it does appear to give an indication as to whether a stone is or is not Moissanite.
My prime electronic diamond tester is a "Diamond Beam" which I have had since 1987 when I completed my Gemmology course. These are no longer available.

My best and most reliable tools are my eyes and a 10 power loupe. A high qual Gem microscope  and knowledge of how to visually ID diamonds.

Adrian SS.....ex FGAA
« Last Edit: February 17, 2014, 13:30 by Adrian ss »
  • Detector(s) owned/used: Sea Hunter MK II, Safari, SDC 2300, 6000DI SL ,BHID,ML Stirling,GS 15000, Sov XS, Lobo ST, relic M 7,Fisher 553D & 555D,CX4PI,Infinium,Spectrum XLT.6000D,6000DI S 3, Gold Spear, Scorpion, CXII & CXIII,Pro Scan,Some Home Built VLFs & PIs and some others.
  • Oldest find: 1797 Cartwheel penny

Offline Marty

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  • Oldest find: 1797 Cartwheel , 1806 & 07 George III half penny, 1823 & 25 Farthing , 1825 George IV Penny ,1876 20 Mark Gold German Wilhelm I, 1889 Queen Vic Jubilee Head Double Florin, 1937 Australian Crown, lost gold ring over 120yr ago, returned property owner
"Just Dig It and it will come"

Offline Adrian ss

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Re: Diamond Tester.
« Reply #12 on: February 17, 2014, 16:27 »
I guess Diamond beam 1 is a similar name. I paid 380 bucks for mine in 87. Now everybody and his dog makes them so I guess the price may not be an indicator of efficiency anymore.

Mine is a go/no go instrument. It beeps on diamond and that's it, it is quiet on everything else except metal when it will give a loud warning sig.
  • Detector(s) owned/used: Sea Hunter MK II, Safari, SDC 2300, 6000DI SL ,BHID,ML Stirling,GS 15000, Sov XS, Lobo ST, relic M 7,Fisher 553D & 555D,CX4PI,Infinium,Spectrum XLT.6000D,6000DI S 3, Gold Spear, Scorpion, CXII & CXIII,Pro Scan,Some Home Built VLFs & PIs and some others.
  • Oldest find: 1797 Cartwheel penny

Offline Stealth914

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Re: Diamond Tester.
« Reply #13 on: August 02, 2014, 23:03 »
I also have one of these & find a real diamond will light up all the led lights whereas fakes will only light up an xtra one or two led lights no matter how I set up the adjustment.
 I have checked my finds with local jewelry shop & they tested using different ways & found same result . 
If you are using this unit to buy diamonds maybe still get a second opinion but for what you find hunting its a great n useful tool to have.
  • Detector(s) owned/used: Now the precious 3030 woohoo,Minelab Xterra 705, Minelab pin pointer 25, Nel Hunter
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